I totally agree with the last 3 posters. I've used Rage broadheads for the past 6 years and have killed 6 buck. All were complete pass throughs and none went more than 40 yards. I was always skeptical about mechanical broadheads but Rage has a very good one in their 2 blade design. I've heard of a few reports where the 3 blade design did not always open fully upon impact. I cannot deny or confirm these claims.
I've used fixed blade designs that were also deadly and quick killing and I've also had fixed blades do exactly the same thing that Wingbone above described. What I like about Rages is that on a marginal hit toward the back it still does a lot of damage. As for hitting a shoulder blade I still see it blasting through and causing significant internal damage without passing through. And even with a one sided wound it will leave a good blood trail.
I would say that anyone who uses a Rage, or any mechanical, use sufficient draw weight to jet the job done. I would not shoot any mechanical using less than 50# draw. But that's a personal limitation.
Some designs like the Shwacker which do not deploy until entry IMO are horrible and I would not recommend them to anyone.