I've used rockets and spitfires. Spitfires get my vote....BIG holes, and they fly straight. They also have replacement blades available, though they easily resharpen with a mill file and stone. A friend of mine filmed a buck killed by a Grim reaper. You can see fountains of blood squirting out of the deer, which moved all of 10 yards. nasty kill. there are lots of good brands out there, I think, but I'm happy with spitfires for now.