SP10 Mk II vs Mk III


A couple of guys here were planning to do listening comparisons of the Technics SP10 Mk II vs the Mk III, in their own homes and systems. Has anyone actually completed such a comparison? I am wondering whether the "upgrade" to the Mk III is actually worth it in terms of audible differences between the two tables. Possibly mounting either table in a well done wooden or slate plinth mitigates any sonic differences that would otherwise be heard. I am thinking of Albert Porter and Mike Lavigne in particular, who were going to do the comparison. Thanks for any response.
lewm
Anybody aware of the SAEC SBX-7 plinth for the SP-10 mkII? http://yasshin.hp.infoseek.co.jp/saecsbx7.htm

Atmasphere, you've got a point though. Lead is not optimal - its got high mass but is 'unstable'.

I would rather go for a fiber-loaded (incl aggregates) compound that is pour-cast and then CNCd.
What do the SP10 experts think of this Teak plinth for sale on ebay??

http://cgi.ebay.com.au/Teak-Plinth-for-Technics-SP-10-SP-10MK2-SL-1000_W0QQitemZ390014496088QQcmdZViewItemQQptZTurntables?hash=item390014496088&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318
After lead now we have tropical wood endegered species ! I am not Greenpeace militant, but if we can chose between eco-friendly or not why not choose eco.
It will just add some proudness in our small niche hobby. No offence here, just a friendly reminder.
Downunder, that's one of the OEM plinths for the Technics, the same as my friend has. If you want my opinion, it sucks- the arm board is resonant and has a cavity to help the resonance. It is purely built for looks and would look good alongside a Pioneer receiver in a wood cabinet.

Funny about that. There are a few of us here that would not be caught dead listening to a 70s vintage Pioneer, but no worries about the Technics :)