SP10mk2: OMA Graphite plinth vs.Dobbins plinth


According to the price lists they are in one category, but anyone could comment on quality/performance? At the moment i use big Teak Wood plinth (just $750) custom made in Taiwan for my SP10mk2. Looking for upgrade in the future. I use my sp10mk2 with Reed "12 tonearm now. Doest the plinth actually makes a big difference in sound? My stand is well damped with glass, metal and sarbothane in between.

1) Oswald Mill Audio graphite slate plinth (single layer) $2750, double layer looks fantastic but cost $3500

2) Steve Dobbins famous custom plinth cost $2650 including three Stillpoints feet and automotive show quality paint in black or white. Design has changed many times, still hard to find any current plinth picture online.

I know there are Albert Porter's and Artisan Fidelity quality plinth available, but i don't like the design (i mean just how it looks) for SP10.
128x128chakster
That company is USA offering many different solution to clean metal (guns, knifes etc), i think some stuff works well for metal parts of the turntables etc 
Has anyone tried upgrading the power cord of the SP-10 mk2 power supply ?

I did it on the power supplies of my SP 10 but I have to complete the restoration and I do not know yet if the sound could miglorate.

I have not used IEC sockets because I want to keep my power supplies as original as possible, the only cable that is quite compatible with the original power supply hole is the VDH Mainserver; I had to widen the fairlead and work a little for the passage but I did it.

Here

The VDH is deprived of the cladding under the transformer to make the internal cables reach the terminals.
Great info here. I contacted OMA as @chakster  want's to use some of his iron cooking pots for a plinth. They quoted me $10,000 for their new Hypo-eutectic grey iron plinth that weighs 150lbs. Wait for review from Fremer DJ before you buy!
Deal all, please have a look

This a new producs from OMA
Cast Iron plinth for Technics SP-10R  

Link published on https://twitter.com/oswaldsmill 
Anyone can comment about sound properties of the Cast Iron plinth and this material in general ? New video appeared here, watch at 3:55

I am thinking about DIY iron cast plinth for my Victor TT-101.
The OMA is the only company that use Cast Iron for plinth, and this is their next one after graphite plinth.