Im a huge fan of the Grim Reaper broadheads. They are mechanical but probably the best head i have ever shot. No rubberbands. They are spring operated. I shot a buck this year from a ground blind and it went through the shoulder knuckle, lungs, other shoulder knuckle, then about fourty yards and into a tree. Never seen a broadhead do that before and i'm only shooting about 260fps. You should give these a whirl. I was very impressed.