I always preferred SP-10 mkII, but most people on audiogon are beginners when it comes to turntables, and some of them don’t know how to set-up a tonearm or cartridge, so combine Drive + Plinth + Tonearm is much more complicated for them. They are all afraid of vintage turntables, so they have no choice.
New Technics are top quality turntables, G is a high-end unit and GR is not far, even MK 7 is much better than nearly all BD at this price ($1000).
SP-10R is the ultimate, if you want to talk about Technics please consider SP-10R and try to find any weakness of this taking in count its price.
If you can explain a "warmth" of a drive that rotate record then please write an article about it. I think it’s subjective and has nothing to do with facts. Everything else in analog chain can change the sound so much (much more), but not a TT drive (it’s the last thing ever).
Problem with relatively cheap BD turntables is their build quality, their tonearms (with no adjustment at all), their cheap motor, their belt, they are like toys for kids and those are the most popular today (rega, pro-ject, music hall - all that cheap crap).
Quality belt-drive is something like THIS