I have used both and have equal performance with both. They are both great broadheads. I currently use 3 blademuzzys as I bought a bunch for elk hunting last year and most people don't recommend expandables on elk. I know a lot of bear camps don't like them either. I have seen bears shot by Ralph with a spitfire and watch them drop within sight of the stand. I think the place where an expandable shines isin wide open windy places where long shots are the norm like antelope and barren ground caribou country. The wind is likely to have less effect on arrow performance with an expandable.A whitetail hunter in a treestand shooting 15-20 yds gains nothing by going with an expandable IMO.