I have owned the Kat 70 and have many flights on this one and all it took is one flight on a mojo 60 to tell you it's a better flying 3D airplane. The Kat snaps a little cleaner and holds a line better but the mojo 60 is simply impressive in inverted and upright harriers. The Kat "might" have been slightly easier to harrier roll. The mojo will hold up WAY better than the V1 Kat 70