I have flown the 4-Star 60 with a OS 61 FX and it is a good combination as a sport flyer, I am not sure why anyone would want to fly 3D or hover with this type of airplane but I would guess the 90 Supertigre would do this and then some, the 90 ST provides great power but is messy, they like to throw a lot of oil and the high speed needle valve likes to come loose so if you buy on make sure to lock tight the two screws that hold the needle housing in, I fly a Lanier Stinger 60 with the 90 ST and it is a fun airplane. It really depends on the type of flying you are going to do with it. The 61 won't give it much vertical.