Cost wise, It's a wash IMHO. Magnaporting makes sense to me when you have a barrel with a front barrel band and don't want to make it look stupid by adding an outboard brake. If you have a barrel without a front band, then I'd add a brake. They are incredibly effective recoil reducers in big bore rifles. My .50BMG competition guns all use clamshell brakes and I've shot three sub 5 inch groups so far in registered competition with them in heavy class. You won't see anyone on the line in Reno in April without a muzzel brake of some sort. If they effected accuracy at all you can bet no one would use them. I like big booms anyway!-Rob