There is nothing better for 3D practice than a profile. I found this out recently after buying a Katana 40 from Accel. The only thing that bothers me about this particular ARF is that it bobs in elevators, does not want to stall. Other than that it does a lot of cool things. Walking speed knife edges are awesome. Hovering is very stable. That price for a Mojo is high for a plane I am likely to dork very often.
The other good 3D practice plane is a the Shockflier but that almost needs to be flown indoors. It's hard to find calm days to fly it.