Just an observation here, but????????

I favor suspended ones.  Its like a car.  Would u feel the bumps in a car with great suspension or with great mass but no suspension ?  The WHOLE mass resonates.

If you don’t have the ability to get an absolutely massive rack w/ isolation platform and place it on a solid enough floor, then I think a proper spring suspension is your salvation. For “cost-and-obstacles be damned” folks, the former is better.

i have both. The heavy no-suspension table goes on a Critical Mass Systems rack. The sprung SOTA goes on a much cheaper Salamander.

@cakyol - although the Linn has springs, it has almost zero isolation from footfalls.  Believe me.  Unless you're using concrete floors or some other unshakable surface, wall shelf mounting is a must.  I thought they were isolated too, until I got one.  Look at it the wrong way and it jumps - if you have springy floors.  

The Townshend Audio Seismic Pods provide the isolation springs do in a suspended-subchassis design. Put a set of them under your non-suspended table and you have the best of both worlds.

One of the biggest factors, in belt/tape/ string tables, is platter mass.  This may be are ears hearing micro speed variations.  Large motors are also very influential.  Yes they can even be noisier (isolate from table).

Well just a couple of ideas if you build your own or things to look for when buying.  All theory aside listen in a system where parts or whole turntable can be switched around.  This is where the adjectives stop and the rubber meets the road.

Enjoy the ride
Tom