Don't take this the wrong way, but (other than the ferrule/one piece construction), how are these different than the muzzy 4 Blades that have been around for years? Anyone here used both the slick tricks and the Muzzy 4 blades that can make a comparison?

I was looking at them the other night in the shop, and the owner nor I can understand why all of a sudden these have become such a "hot" item. I shot the Muzzy 4 blade 90's (1")for a couple of years, and the 115 grain4 blades(1 1/8")in one setup, and they were/are good heads, but I'm not sureI'dcall either of them "devastating" as regards to tissue damage and bloodtrails

Again, this is a legit question on my part, not a