TT drives
I think, as some have said, that each system can work very well if it's properly engineered. I, personally, would go for a big DD like the L-07D, as this has a heavy platter with a large-ish moment of inertia and sounds really very musical when properly set up and serviced. The idea of DDs constatnly hunting for the right speed is certainly the case with cheaper, non-quartz examples, but in my experience, well-engineered, PROPERLY-SERVICED quartz-lock DDs just don't do this. I suspect the frequency of the wow is more of an issue in terms of musicality, etc, although this is me speculating wildly here, so take this with a grain of salt the size of a phone box.
I think many quality vintage DDs have picked up a bad reputation because the bulk of them are either mal-adjusted, having drifted over time, or because they're solid sub-chassis decks set up on solid shelves. They really need to be on something like a Townshend Seismic stand.
One problem I have with many (though not all) belt drives is the bass. I suspect the compliance of the belt, the moment of inertia of the platter and the stimulus of the motor create a low-frequency resonant circuit causing very low frequency wow. One of these days I'll get round to sticking on a test record and comparing a few DDs to a few belts with some spectrum analysis freeware I have on my PC. The difference in bass solidity between a good DD and a good belt is usually very obvious IME - the DD usually sounds a lot more solid than the belt. OTOH, in DDs the platter is coupled directly to the motor, but in better DDs with decent bearings and motors, and hefty platters, I'm not so sure this is really a problem. Dynamic wow is also a problem, and here I think almost all cheaper DDs and many belts (although, again, not all) suffer from insufficient torque, not a problem for the likes of the SP-10 Mk2!
I like the Garrard 401 I used to use for it's sense of unstoppability (plenty of torque), but there was too much motor noise for me to really stick with it.
Cheers, Jon.