Manny5150,i used a master air screw 14/6/8 the 14/8 is what i got the best performance out of,it was a little fast landing with the 14/6.i am going to try a apc prop next in the same size.if you look at vector flight customer pictures that is my plane with the Mickey Mouse pilot posted there.i cant say enough good things about VF,i had some problems with the belly pan plastic being slightly warped and the wheel pants cracking they cut them out of the molds for me and shipped in about a week.when i got the new wheel pants i fiberglassed the inside of them and haven't had anymore problems,i would recommend doing that if you take off on a grass field.actually any abs plastic wheel pants i recommend that.run the airplane on low rates at first,i thought it wasn't enough control surface throws and was surprised how responsive on low rates it was.hope this helps some...happy flying