Basis 2500 speed fluctuations anyone?

I own a Basis 2500 turntable and was wondering what sort of improvement i would get with a VPI SDS? Do any of you own this table and use the SDS? What are your observations?
Check the thread on Turntable Power Source Benefits. I use a Walker Motor Drive with my Basis and find it to be an excellent addition, even though I never really noticed any speed fluctuation from the motor. The motor drive acts also as a power conditioner and keeps noise from the motor from getting back into your system. I imagine the SDS is similar, though I don't know how good it is as a line conditioner.
Bruno: I had an after market power cord chopped into my Project Classic Wood TT, and I plug it into my PS Audio P300 Power plant. That keeps things nice and steady.