Neu vs. Lehner

[Serum]

Quark is a smooth conroller.

No, you won't notice a big difference in smoothness, i explained what the big differences are, and that would cover the entire load. Besides a few minor other things people might like/dislike.

Neu/Lehner uses better bearings, but since a bearing is an easy and cheap replaceble item in the wanderer/feigao motors i don't think that it should be a large factor not to buy them.