Did you have the TT-PSU with the Rega P5? It was an option on that model (great one - I used to own, discontinued a while back) that should eliminate any speed variations that are noticeable to the human ear. The PSU is standard on the P6 on up I believe.
They take care of any speed issues, and if you are really anal, they are now adjustable down to a miniscule level (I think .1%), if you want to do so using a strobe. My dealer said it is almost impossible to tell the difference of a minor adjustment and they come out of the box right on the money. Also, belts last an incredibly long time and now most come with 2 belts as part of the design to make them even more stable and long lasting.
I like Rega's simplicity, sound, value and incredible arms for the buck. Anybody else out there give a lifetime guarantee? I have a P8 and think that is the sweet spot for value in their line, and they're probably the only company with a range from the lowest price point to the highest. Naiad is $40K and supposedly unreal.
Anybody have or heard one of them?
The only issue with Rega is you have to make sure to minimize vibrations, especially from a suspended floor. That's why they sell wall mounted shelves. I have a Townshend Seismic Platform that was a huge improvement (and I use a wall shelf for double vibration elimination).