I have over 2 dozen deer killed with Rocket heads and really have faith in them.......You do have to use a little common sense and tailor the style of the head to your personal set-up, and if you do they are extremely effective.
I have had the shortest trails, and biggest holes using Rocket heads. I shoot mostly the mid range to larger stuff for whitetails, but I have settled into the Sidewinder,Slammerhead size range. They give me the best blend of cutting diameter/tissue damage and penetration for my hunting bows.
They are working on their blade sharpness too......I have 4 new packs of Slammerheads and they are very sharp.