I started out with thunderhead 100's and switched to the spitfires. I love 'em. They fly like field points, cut massive holes, and Ive never had one not open. The only problem I have with them is one shot and they are usally no good anymore and at $10.00 a pop that hurts the bread fund. I know they have replacable blades but you just about have to have an engineering degree to change them.