[mateba]

I like the Nineball and KA but they are a little stiff for near stock to 500+FPS in my opinion. I believe they are 70 durameter hardness which associated with 600FPS. I would try a KM RH55 for things around and under 450FPS. They are meant for 350FPS but I'd rather have a softer bucking than too hard of one. They still have the V-hop cut in them like the firefly. I would tell you to get a Firefly but their AEG buckings have been spotty lately so a its a bit of a gamble.