Unless you gear low, the MM will have issues with the Neu. There is supposed to be a software fix for that, but it's about as definite as the MMM release.
For the Neu motors, your best bet is an MGM or Quark.
Cimetery gates (not sure if is this guys but anyway), here on this forum, tell me that is MM/Neu combo work very good, exept of a little cogging on start, but if he play with gearing, it's smooth enough. Anyways, i'll try it i've a MM controler and i order a Neu 1515, 1Y for my revo and i'll give it a try.