Most of the faster Mardaves seem to be running the UFRA pink medium tyre on the rear and JAP 52 shore up front. The Supastox guys mostly use Conacts I think - 32R and 50F or so.
I have tried contacts on the Mardave but the balance wasn't great. With the Pink Med/52 combo there is enough rear grip to make it easy to drive, but just enough rear slide to avoid rolling. It's a fine line that gets broader as the shell gets lighter or lower. I use additive only on the rears, CS High Grip. Check out my Mardave set up page here:
http://www.fulloption.co.uk/mardaveV12.html
I read that thread you linked to. Really can't understand the 1S thing. It just has got so many more failure points than 2S. Weak.