I only hunted one season with Grim Reapers and really liked them a lot. No problems with penetration at all and they left huge holes.

I used the Rage 2 blade this year and for the most part the Rage and GR performed very similar. However, I did take a buck with the Rage and did not get a blow thru, shot was about 1" high of where I wanted it, but did not get into the shoulder or anything, so not sure what the problem was with that 1 shot.

If I were deciding between the GR and the Rage, I think I would choose the GR.