I shoot the g5 Montecs and the hellrazors, they both fly really well, the Montecs are one piece and the hellrazors are welded together, they are both tough heads. Haven't taken a deer with either yet so can't report on that.
G5 montec and the T3 have been great broad heads. I'm 13 for 13 with the T3's, use the montec for hogs and just resharpen then.
I took several deer last year with the Hellrazors and they have been flawless. They all went through like a knife through butter and remained usable...even going through shoulder.
So I went into the local archery store and what do you know they dont have hellrazors or montecs so was going to get the montecs but ended up getting grim reapers,by the way these thing fly awsome and come with a super sharp razor edge, a bit expensive at $40 for three but definaitly worth the money!!!!
Either G5 Montec or the Muzzy Snuffer SS, check them out they are the same as the montec's or the hellrazor's but have lifetime unlimited warranty no questions asked just keep your receipt, I'm going to buy some for all that and they are way sharper than montec's or hellrazor's out of the box so you don't have to worry about sharpening them and they fly true