Which power system is more capable for 3D? For example, the OMP Yak and PA Katana both have combos for the ARF and power system for $319.95. The Katana is Lipo Powered full body model where as the Yak is a profile Nitro. I've seen video of both models and their performance is unbelieveable. So if I'm learning 3D, is one easier than the other?