Need recommendation for hi-rez xlr plugs for re-termination project

You asked so...having used expensive connectors on the cables I have made for years, I doubt those connectors make that much (if any) difference.  If you don't like the sound of your new cables, changing XLR connectors is unlikely to substantially  improve the sound, IME. 

I suggest using connectors with high conductivity conductors (i.e., those that use pure copper) such as the Xhadows (not the Furutech 601/602) or, for a lot less money, the DH Labs XLR connectors:

XLR OFC Copper, Gold Contact Pin

The DH Labs Ultimate XLR connector features pure copper contact pins for the highest signal integrity. It accepts cable up to 7mm with the included rubber boot, and 9mm with the boot removed.

Also, keep in mind, what you plug them into is likely to be bog-standard Neutrik chassis connectors using brass (25-50% of IACS) conductors.  However, Furutech does make chassis connectors using plated pure copper so, if you also upgrade your equipment, that might be one place to start.

Years ago, I bought a few hundred feet of vintage wire.   There are 2 bundles inside, each being made of 7 solid core silver plated 18-gauge copper wires.  I've been using it as my speaker cables and I've made almost all my power cords from this wire sans a ground wire.  It has replaced many cables/cords.  My speaker cables at the time were Audio Magic Sorcerers and Tara Labs Decade.  I had several power cords which came and went but these DIY power cords are still in place.  Power cords included Fusion Audio Enchanters, BMI Whate Supreme and Hammerhead Gold, Virtual Dynamics Nite Platinum.... many others.   I reference this to indicate the quality of the wire in question.  It's pretty good stuff.  

I have used on this cable the following AC plugs:  Furutech FI 25 gold,  IeGO 8065 (silver over copper) 8075 (rhodium over copper) 8085 (gold over copper) and 8095 (rhodium over solid silver) as well as the Oyaide 046 palladium over gold over copper and 004 platinum over palladium over copper and it's pretty easy to hear a significant difference with each plug type.  The differnce between either of the gold plugs, IeGO or Furutech and, especially the Oyaides and the IeGO 8095 is, in my opinion, a real deal breaker.  Those gold plugs on my go-to wire obviously reduce top end extension and ad a very noticeable haze to the sound.  Images become less distinct, and the bass loses texture and can bloat.  And all the subtle little details which make the sound more real, more vivid are lost.  And that is just by changing the AC plugs.  I know this for a fact as I've done A LOT of experimentation.   I'm sure you're right about the XLR chassis plugs being less than top notch and could be upgraded for better sound but that doesn't mean these xlr plugs for the interconnects aren't very important.  In my experience, it ALL matters.   

You mentioned using the pricey connectors on your DIY cables, what xlr plugs have you used and what wire?  What were your experiences with those xlr plugs.  Thanks for your input and time

There is not at present PC Triple C Pin Connectors in the Market Place.

The next option will be OCC Pin Connector, and these are available at a inflated cost to other pin materials.

Atlas is a Company selling these type of connectors only, as well as with a Cable.  

IF your equipment uses the AES standard, then XLR cables should have minimal effect on sound quality.

Also, XLR cables show minimal signal degradation over long lengths, 2 or 3 meters won't make a difference.

But, if you have to change cables, then save your money and get some Mogami.

Bob

A cheap upgrade is to get MAD SCIENTIST AUDIO'S Graphene Contact Enhancer

If that doesn't knock you down (it should) then check out Ali-Express and search for XLR connectors. FYI also search for Odin 2 Gold XLRs-  that's what Im using