SOTA NOVA, HR-X VPI, Technics 1200G recommendations?

@lewm, I think there might be some confusion here. I think, correct me if I am wrong the you are refering to groove speed which slows down towards the center of the record. That does not affect friction and skating much. Groove velocity refers to the distance the stylus has to travel in the groove. In a more heavily modulated groove the stylus has to travel farther but never in a straight line. The stylus has to keep changing direction which takes energy. Thus as the groove velocity increases friction and skating increase and the groove becomes progressively harder to track. This is why skating is so hard to peg. It keeps changing with modulation (groove velocity)

I used to be a die hard belt drive guy.  Ever since using the 1200G, they all seem like they are missing something.  Unless you spend say 20K for a good belt drive, they lack the the bite that is in real music that the direct drive and its speed stability and torque seem to provide.  Many belt drives seem smoothed over in overall sound reproduction.  It's all in what you like for sound.  IMO the 1200G just offers a lot for the money.  You can always put a different arm on if you so choose but for me, the stock is fine.

No. What I am referring to is the fact that velocity is not a parameter to be found in the equation for the force of friction. And friction is the basis for the skating force. All other things being equal, friction is the same at 33 as it is at 45rpm. I take your minor point that groove tortuosity does seem to contribute to the skating force. Or what we observe as a skating force. I think that is because the tortuosity of the groove causes tiny accelerations and decelerations, i.e., changes in velocity of the stylus. Every time you have a change in velocity you have an acceleration. Every acceleration generates a force (F=ma). So my hypothesis is that the contribution of groove tortuosity to the skating force is due to these accelerations, which are not really due to friction. In that sense, Ralph is correct.

@lewm  I have to admit its an assumption on my part that people are playing LPs have have something other than a steady tone :)

@lewm , in the record industry groove velocity is almost a synonym for groove tortuosity. Groove velocity is the distance the stylus travels in the groove divided by time usually in cm/sec The more heavily modulated groove has a higher velocity as the stylus must travel farther. You are referring to groove speed as not affecting friction which as you have mentioned many times, it does not. But, you agree that groove velocity certainly does! 
@atmasphere,that is a reasonable assumption except maybe for millercarbon:-)