I had 2 of of GP Gee Bee's and destroyed the second one on a head on collision with another plane in the air, it was pretty cool looking, My main tip that i don't think anybody has said yet is that you should put a bigger engine than they say to put in it. I used a TT .46 and it was great but i think it would be awesome with and O.S. .61. but thats just my opinion.