Until I started using a drop away (going back to whisker biscuit) I loved Magnus. With a drop away I always worry about it falling off the rest and cutting my hand. I've been using NAP Shockwaves with success but I think I'll be trying the Carbon Express Torrids soon.
I've killed all my buck with either Thunderheads, Muzzy, and just last week G5's. As someone else said, with technology the way it is across the broadhead spectrum, it becomes more a matter of a well placed shot and not so much which broadhead to use. HOWEVER; that being said I would stay away from all mechanical heads. Not a lot, but too many bad stories I've heard from folks using them.
I love my Rage Hypodermic broadheads and they come with a practice head also so you can tune them in.That being said I also like using Muzzy's because they are pretty rock solid.Like the other members said with today's technology and with a well placed shot almost any strong-sharp broadhead will work.