KentT wrote: The SP series are the best. SL-1100, SL-110 and SL 120 armless models the next down, then the SL-1200 in it's models.
All the SP models, and the SL, too, are limited by their bases. The original SP 10 could be had in a wooden base. This was a wrongheaded solution to record playback, but was very common, back then. I owned a Denon DP-75 with a wood base that was similar to what Technics was offering, and that was its Achilles heel. You see, wood is typically quite resonant; that's why they make guitars and violins out of wood. In fact, my lowly DP-30 with its concrete-like resin base sounded better than my DP-75 with its large wooden base. The Kenwood 500 series turntable with its marble-like base was another cheap, but effective solution.
The later SP-10Mk2 bases were more substantial, but some found even those too "live." To solve the issue, Mitch Cotter devised a heavy mass loaded laminate base to which he mounted either an SP-10 or DP-80, both stripped of their aluminum housings. The thing was quite ugly, but for those that heard it, quite effective in isolating the table from feedback and vibrations. Sao Win used a spring loaded system (similar to the one used in the the Oracle table--some say the Oracle design was "stolen" from Win--an act of industrial espionage) in order to isolate his SP-10 derived SEC-10 turntable.
The original SL-110/1100 chassis was better than the SP-10 wooden base, but still not very effectively damped. The platter is larger, but only damped at the top, by the mat. It features a hollow aluminum chassis on what feels like rubberized plastic. I own one, and it is not nearly as solid as my Mk5 SL-1200.
Actually, the later 1200s are too resonant from a purist's standpoint. However, because it is basically a sound design, it can be helped by isolation, away from stray acoustic vibrations. Placing it on a very solid, high mass foundation, etc. High mass was the Micro Seiki solution, and can be readily adapted to any turntable by way of external additions, as needed. As I mentioned elsewhere, IMO the KAB arm damper is a necessary addition. KAB also sells some footers that are probably useful. At least I would expect as much. The latest and greatest SL-1200 GAE has more springy feet to address this potential problem.