trophyhuntr,

If you will stop and think about what you wrote in the above post you will realize it makes no sense. Muzzy makes several great broadheads. I personally use the 100 grain 3 blade and have had very good luck with them on several deer and black bear.
You post says " lost the last two deer i shot perfect with them" if you shot the deer perfect they would have died within 100 yards. Sometimes its hard to admit you did not make a good shot and it is much easier to blame your equipment.
A double lung hit on a deer with a three blade muzzy will equal a short track and a dead deer as a matter of fact a double lund with any broadhead will result in a dead deer.
What are you calling a perfect shot? What rational explaination can you give as to why a perfect shot with a 4 blade would kill a deer and the same shot with a 3 blade would not kill a deer?
Not trying to bash you here but I think we all know it was not the broadhead.
Did you shoot the new broadheads to make sure they hit the same as the old ones?