I've used spitfires pretty much exclusively for the past 6-8 years. I've been thinking about going to a fixed blade BH, though. I like the 4-blade muzzys because I think they would require less tuning than other types of broadheads that are bigger. They are small, a cutting diameter of 1", but I think the 4 blades would still cause a lot of blood loss. I'm mainly interested in them because I think they might fly pretty much like a field tip, the same way my spitfires do. Do any of you guys use them? How do they perform in terms of accuracy and arrow flight (windplane, etc.) Do fly much different from a field tip or match tip?