Guys,
Yes, I made my own. But, I used the Teres design, acrylic platter, bearing, motor & controller, clamp, and battery pack. The main difference between mine and a stock 245 is the plinth. I also built a sub base a la 340, but it is not connected the way the factory one is. It basically serves as a high mass (maybe 30# Brazilian rosewood ((Madura)) shelf for the TT. Oh, I also went to VHS tape, and for some strange reason I like it better than the mylar.
I may be going out on a limb here, but I'm guessing my plinth sounds better than the "standard" one. I have 25 pounds just in lead shot in it & the arm board. There is also a solid piece of Macassar ebony inlaid (structually, and for sonics, not just for cosmetics) in to the top. It is also at least an inch thicker, and wider around the exterior shape of the plinth. Also, the arm board is solid ebony with lead loading. I also have a couple of other armboards in the rotation.
As far as the weight of the two companies' platters go, each is arrived at in a different way. Teres: Wood. Quattro Supreme: Metal & Teflon. Both use lead loading. As we all know, there are different sonic outcomes to each approach.
I guess my personal opinion (yes, my PERSONAL opinion} is that the Supreme is one butt-ugly piece of work. I have not heard one, and it may sound exceptional. But, if I was going to dump six grand on a TT, it would be a Teres. I don't even really like the acrylic plinths compared to the wood Teres, but I still bought 2 of them in a moment of weakeness (I love that sale page)!
Sure it would be nice to have it raved about in Stereophile. But the day I ever let that influence me over the informed opinions I've learned to trust here on the 'gon is the day I buy Bose.
BTW, Larry: Very well stated! I won't miss the next time.
Joe