How do you know it was the belt? Maybe it had more to do with the more inert platter, the plinth material, isolation, or damping, or that RB300 tonearm? Perhaps there was a better arm/cartridge compliance/resonance match.
Things changed when I heard the P3... and it is belt driven TTs from then on for me....
Perhaps you found it easy to listen through the P3's speed accuracy issues, which may be good enough for the general masses, ;-) but not for me, as 1% speed inaccuracy is simply unacceptable for a Count Basie fan.
But of course, the Technics is basic enough for the general masses.
I've now lived with a Technics SL1210 for 6 months and I can say with confidence that the disdain for its direct drive and S-shaped tonearm w/detachable headshell is misdirected.
The biggest problem with the Technics SL12x0 turntables is that they're based on a 1979 understanding of isolation, damping, and vibration control.
The good news is that the Technics SL12x0 turntables are practically a gift ($399.99) when it comes to build quality, speed accuracy, and quietness, because the isolation/damping/vibration control issues are not hard or expensive to fix.
Platform it on a thick slab of maple or butcher block supported by vibration-absorbing footers, get a Sumiko headshell and a serious 21st century mat, and get back to me, and don't forget how little you spent.

