05-10-09: Klinerm
Thanks, Guys. I see the new TW Acustic for $$$$$ has 3 motors, so maybe there is some advantage if everything is properly controlled, but, like so many things in our hobby, the answer is probably "it depends."
what I noticed about the TW Acustic Raven 3AC was Thomas was using 3 motors to effectively create a platter rim drive. I saw this TT at the RMAF2007 show & I heard it in the dealer's room (Highwater Sound?? - the dealer had a prick of a personality IMO). I cannot comment on the sonics after just hearing it for 10-15 minutes but I noticed what the 3 motors were trying to accomplish - the platter rim drive.
I also notice that many other manuf like Teres & VPI have gotten into rim drives.
Apparently the notion is that the less the surface area of the belt that touches the platter rim, the better as people feel that too much surface area "chokes" the TT sonics. Well, I have no personal experience but am only recounting what I've heard.