Direct Drive vs. Idler Drive vs. Belt drive


I'd like to know your thoughts on the strengths and weaknesses of each drive system. I can see that direct drive is more in vogue over the last few years but is it superior to the other drive systems? I've had first-hand experiences with two out of the three drive systems but looking to learn more.
128x128scar972
I did respond to this, in my post just prior to this.
Apologies, somehow I managed to miss it. Now remedied.

I took your original post to mean a mat with the same universal durometer as vinyl, which was why I wondered. Thanks for clearing it up for me.
@scar972  There's a photo on my System page. It's an aluminum light grease bearing with POM linings and ceramic ball. Made by a guy in Asia. SPH. sphBearing AT gmail com
@lewm 


Total 14.8 kg (Chassis 5 kg, Platter 9.8 kg); Power Supply 0.5 kg


So 21.6 pounds.

I even checked my math with a conversion program!

Platter weight 9.8kg = ~21 lbs.  I see no conflict with what you previously wrote, if you're talking about the Bardo.
Mike, Platter of SP10 Mk3 is listed as "10kg" or "21 lbs", everywhere. Not near to 30 lbs. It's heavy enough as is.