Both have their advantages and disadvantages. I personally like ST better as I think their design is tougher than Muzzy, and I've yet to have a ST with a ferrule that wasn't straight, while Muzzy's have ferrule straightness issues. I like the 4-blade cutting and have the energy behind it to get that BH and arrow through some tough tissues, including a spine this past year. If I were shooting a lower energy set-up, that extra blade could potentially be an issue, but you add 33% more cut when having equal cutting diameter BH's. Flight characteristic wise, if the arrow BH set spins true, I've not notice any MAJOR issues either way.