G5 STRIKER or the Striker Magnum would be my first choice. The magnum is 125 grain and flys great at 300fps. I shot a small buck with one this fall and the damage it did was impressive. Small or large black bear would fall quickly to it too.
The bear in my avator pic was shot with a Razorcap 100. Pass thru at 22 yards and a dead bear at 50 yards. I'd use them again just too many heads out there today not to keep experimenting with new ones. I have not tried the Rage heads yet nor the Spitfires but I have seen plenty video photoage to know they do the job.