I have one of these and have used 2 different engines..The 60nx is a no go IMO..plenty of power with a 13x4, but just too damn fussy..I have a Saito 82 with a 14x4 and it rocks the house.. A lot of guys like this plane and after 2 months I do not and its going to the attic.. On the plus side its cheap and and a easy build, but I don`t think it flys that well.. I like to fly a mix of pattern and 3D and the thing just tracks crappy..The snaps are poor and I can`t get it to do flat spins worth a flip..I have moved the CG and checked the throws with no luck..It does hover easily though. weak fuselage as well..I know you didn`t ask that, but I can`t recommend that plane as there are better (more expensive) airframes.. Not even in the same conversation as a 3D hobby shop plane as they are the best ...