I have owned a Dual 12229Q, Dual 1019, Elac Miracord 50H, Rek O Kut Rondine Jr L-34 (look at my avatar pic and click on view picture for a better pic), several lower ended Garrard changer types, Rek O Kut B-12H (being restored now), and also have a Maggie console that has the idler table in it (which also will be getting a full restoration). All of them had one thing in common-better and quicker bass response to me than a belt drive.
Now prior to them being restored as best as I could myself, there was audible rumble, afterwards-none that I could hear. I am nowhere near a professional either. I also didn't hook anything up to any equipment to test,but used my ears as well as a few other people's ears. I've noticed redoing the idler wheel, and redoing the motors and replacing rubber grommets were the key.
I have also been interested in trying out a Lenco, but for the price vs what needs to be put into them, it hasn't made financial sense for me to do it at this point.
You'll also notice, outside of Dual, Elac, and a few others, all of them need to be heavily modified in order to get superior sound quality against the stock ones (belt,idler,and dd tables included) with arms, removing parts, adding parts etc. So if you're not looking to drop much money,I'd go with a stock Dual or Elac, or maybe even a Garrard. My ROK L-34 had a Grado wooden arm, and the ROK B-12H has the micropoise arm, and they came with them that way. The L-34 when finished along with my 1019 when finished were super quiet and could hang with my fully modded AR-XA (pictured in the middle of my avatar), as well as my Ariston RD-11 Superior (which was also fully modded,to the left), but you could hear they slightly lacked in fine detail due to the stock set up.But the differences in $500-$700+ in mods should have made one.
I also use my belt drives for slightly more laid back music and the idlers for rock,dance types of music. I have come to like the sound of the Dual 1019,ROK L-34 over the others with the ROK being the nicest of them. I can't really say much about the B-12H until it's finished it's about 80% of the way there though.
Here's a few pictures of the B-12H, many have turned their noses up to the color I redid the plinth in, but the original color was very badly done, so until I decide on another plinth, or color,or veneer, I chose the Colonial Red high gloss. I really like the color on it, and as you can tell in my avatar, like tables a little out of the ordinary when it comes to their plinths. Photo quality isn't that great, but you get the picture.
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