The #1 thing you need to remember with any mech is you need plenty of KE to get good penetration.
I use the rage 2 blade and have had no problems. the main thing is you do need to check them to make sure blades are locked in good. from my treestand and blind i love them. but for my spot and stalk hunts i wouldnt use them. to much stuff to get snagged on and have them open. and when you get a shot while stalking you dont have time to reach up and close it again.