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 have to put a word on belt driven tables. The biggest mistake in my eyes is that most TT-builders only use a one sided configuration regarding the motor issue. You need to have at least two motors on both sides to counterbalance the drift of the belt. On smaller tables you might not hear a difference but in the field of excellent High End tables it does! From my three belt driven tables two incorporate a both sided motor design. Just imagine you go for the most expensive TT, the Techdas Zero for 400 K and it does come only with one motor? No one mentioned the vector issue etc. I have now implemented the most expensive tonearm on one of my designs. You may have a look under AudioCirc.

best
E.
thuchan, that is a hypothesis that nobody has ever proven, it just seems nice intellectually. The greatest turntable of all time was belt drive with one motor. Everyone who owns a turntable needs to see this brilliant video.  https://www.youtube.com/watch?v=1rgK0YMsJXM
I guarantee this  video will change your view of turntables forever.
looscannon,It is a proofed hypothesis AND simple mathematics.
just imagine you have a vector from only one side and then you need to compare it with two vectors from two sides, ideally - if you check properly. The distinctions of the two vectors should make a difference. Do ´nt you think so?

best
E.
The greatest turntable of all time was belt drive with one motor. Everyone who owns a turntable needs to see this brilliant video. https://www.youtube.com/watch?v=1rgK0YMsJXM

"The greatest turntable of all time" ? Is it a joke or what ?