I've shot Muzzy 4-blade 100s for a while. Like the practice blade concept. The MX series have thicker blades. I haven't had much trouble getting them to fly right if the bow is tuned. Have not tried G5, but they do look very good. I've been using Slick Trick heads for the last few years and am very pleased. Low profile, fly very well, .035 blades, very sharp, cut a big hole.