RE: first Heli
I think they are not quite equal, the novus is more similair to the mcx I think, donno what the equivelent of the cx2 would be on the other side. in any case, I have good experience with the CX3 and blade in general has a great reputation, and the larger CX2/3 would give you more stability though will benefit from a larger indoor room, and can possibly even go outside on a very very calm day in an open area.