Cost of suspension :
1 concrete slab (or marble cutting block for higher WAF)
1 wad of soft foam (or bicycle inner tube, or sorbothane)
Can't cost more than $50 ... even to make it pretty.
Personally I have never found that the lack of suspension on my Rega Planar 3 to be a problem. I have used concrete and soft foam and marble block with soft foam and both worked perfectly fine. I was in the same situation ... spiked speakers (big floorstanders), turntable on a rack, all on a suspended wooden floor. I have no experience with suspension tables (I've only used Rega) so I can't say if they'd be better. But I cannot see that they would isolate better than a bloody great big slab of concrete sat on top of foam.
So in conclusion I'd get whichever TT sounds best in the audition and worry about building an isolation platform if you pick the non-suspended one.
1 concrete slab (or marble cutting block for higher WAF)
1 wad of soft foam (or bicycle inner tube, or sorbothane)
Can't cost more than $50 ... even to make it pretty.
Personally I have never found that the lack of suspension on my Rega Planar 3 to be a problem. I have used concrete and soft foam and marble block with soft foam and both worked perfectly fine. I was in the same situation ... spiked speakers (big floorstanders), turntable on a rack, all on a suspended wooden floor. I have no experience with suspension tables (I've only used Rega) so I can't say if they'd be better. But I cannot see that they would isolate better than a bloody great big slab of concrete sat on top of foam.
So in conclusion I'd get whichever TT sounds best in the audition and worry about building an isolation platform if you pick the non-suspended one.