It's a nice plane. and built well. I've flown mine with a os 1.6 a brison 52cc and a brison 40cc. the best combo I liked is the 40cc. it flies at 13.5 lbs and is a good combo of weight and power. the 50cc was too heavy at 14 + lbs. it flew o.k. but I notice I had to stay on top of it or it would drop a wing. with the o.s. it floated like a feather and was really fun. the things I didn't like was the annoying 2 stroke sound and hovering on hot days really got the engine hot. oh! and glow is expensive.