Upper Level Vintage DD Strenghts and Weaknesses

it is right to report the experiences of all but I think it is essential to listen to more music and less attention to bullshit; life is too short to spend all your free time looking for an ideal plinth.

Exactly.
Or to pay attention to seismic activity of the earth pretending your plinth can protect your cartridge when there is an aliens invasion while you're listening to your favorite LP.  

The Thread appears to be Wandering once more.

The OP has made it known in their first Post that there is an interest to receive information about Vintage Japanese DD TT’s from a particular era, and has helped that era be dialled in on by making various Models known that have been experienced, or are Short Listed to be experienced.

There is a Clear Comprehensive Inquiry asking about options on Plinth Materials, to which the Thread has supplied invaluable information to be assessed, with the added information on Sub Plinth Support,
I am thinking these are (Bonus Points) to an inquiry, especially the AT-616 suggestion.

There was also references made to complications that are known with certain Brands TT Models,
be it a Difficult to achieve support with Servicing, a cost associated with a pristine model, or a blatant defective condition known to develop on a Branded Model.

The OP has had confirmation offered on a concern about the blatant defective condition, but has not been guided on how to overcome the other concerns.
Maybe there is still somebody to contribute to this.

The Request for information in relation to TT’s and Plinths is to my mind quite broad, and this has been met with a invaluable offering from the forum members.

The OP’s rigidness on their choice of Tonearm has also been respected,
and they have been left to not have to be confronted with the suggestions of using a different Tonearm.
I hope this is a satisfactory outcome for the OP.

It is totally OK on a Forum to make an inquiry, it is not really possible to control the feedback offered, but as long as the information being made available has a relation to the request for information, all offerings from others will have a value to some degree.

Two Forum Members have recently chosen to make their thoughts on the information being offered to support the OP’s original inquiry Public.

One Forum Member for approx Five Years, and who as a Thread Creator in that time, has produced 'Five Threads' that are inquiries.
Recommends the OP’s inquiry on Plinth Materials and the other members contributions on the Plinth Material,
is in their words giving ’bulls**t attention and is a waste of time.
I am not convinced this is a worthwhile analogy myself.

Their encouragement to listen to Music is very welcome.

The other Forum Member who has been a Forum Member for approx Ten Years and Six Months, and who as a Thread Creator in that Time, has produced 32 Threads, of which 24 Threads are inquiries.
Of which some of these inquiries are extremely closely related to the content of the OP’s inquiry on this Thread.

This members has shown what appears to be a support for the recommendation of the above Forum Member.
I do agree that trying to detect Siesmic Activity whilst listening to a System would be a wasteful undertaking and is a good guidance to offer.

Additionally and ’hats of to this person’ for their humour, they have some how found a way to mock their usage of 16 x AT-616 as a method to protect their HiFi equipment from the effects of a Alien Invasion and a little activity within the Lithosphere.
Long Threads can do with a little interval that has a element of Humour.

@pinda   ... and then after your exhaustive reflection what should be ascertained?
Sorry but the summary is not clear. LoL

So i guess I do owe folks an update. I decided to pass on the Sony TTS8000 due to reported bearing issues. I was pretty well set on getting a Denon DP80 in a DK300 plinth from Unisound, however I could not get them to package the arm I wanted with it. There is one table with the DK300 plinth a bit damaged on the front veneer but it had the Audiocraft AC3000 on it. The second table has a nice plinth but what looks to be a lower end Denon arm of some sort. I had asked if I could have the AC3000 moved to the other plinth as they both were the same finish, and its a matter of moving arm boards. They declined, and I can understand why, but I thought I would ask. 

In the meantime I decided to take a different tack. On Audiogon there is a  Scheu Analog Das Laufwerk No.2 table for sale in Warsaw, but the shipping costs that were listed in the ad were not horrible. Its also a shop demo so it comes with factory warranty. I hit the buy now button, but am waiting for the seller to put together the shipping cost and arrange payment process, its due to be a wire transfer. They are a 17 year member of Audiogon and verified dealer, so while I am a bit apprehensive, this is a known seller. So the Scheu would be my first choice, but as the ad read shipping was supposed to be $300 USD to the US, and if I am given a number that is significantly different then I am going to end the transaction as that is not what was represented in the ad. I should have a firm number tomorrow, so we will have a resolution soon. 

Option #2 is going to be the DP80 in the DK 300 plinth with the lower Denon arm. The arm will get repurposed for another project, maybe even sold off. Or perhaps put on the sideline for awhile and eventually reunited with the plinth and a different drive unit, if I ever get a custom plinth built for the DP80. i could source something like a DP75 drive unit to make a complete table again and find it a new home. But heck I might just love the DK 300 the way it is, perhaps have it re-veneered and call it good. 

Everything is kind of fluid now, the next few days should see a resolution. 

For the heck of it I picked up an interesting vintage MC to use as a casual cartridge on the Dynavector. Picked up an Ortofon MC200. Has a fine line stylus, boron cantilever, samarium cobalt ring magnet, and Ortofons WRD damping system. Output is low, but the Esoteric E-03 phono stage has enough gain to handle it. I will use if for casual vinyl listening till it wears out and then send it off to a retipper I want to try. Be a good test mule for me to see what i get back. 

The desision to decline the TTS 8000 if there is not access to somebody to assist with some of the known issues will leave you with one less hurdle to climb over, if a purchase did show the known conditions that can develop.
A Spindle Housing Bush is not a Direct Exchange with a Off the Shelf Bush Part.
The ID is 11mm and OD 16mm. 
A of the Shelf Bush with a close match will be ID 11.11mm.
The Platter connection to the Spindle will need a complete rethink as to how to overcome the unsuitable coupling and wobble that can be detected on certain Models.
A Worn Bush can be explained with a few descriptions, but the Platter connection to the Spindle seems to be born from Machining Tolerance issues, as it is not realy exposed to any wear during usage.

It looks like your First Choice of TT is a complete Curve Ball to the original inquiry, and looks like a nice piece of kit.
It is a New Model to myself and I am liking the aesthetics of the design.

The DP80 as a Second  Choice is a product with many followers much of the previuous post will be related to this model, as it is a DD.

Additional Information might need to be supplied to assist with getting the best support set up under theFirst Choice that is a Belt Drive.

Keep on with your updates they are appreciated