I fletched 6 radial X weave 300 pros this week. I shot them out to 70 yards yesterday and came away with mixed thoughts. I like how much quieter they are than my quick spins. They are also allot tougher. I did not see any increase in accuracy. They are also allot faster and hold more speed down range (less drag). My thunderhead 100s flew well but hit no where near my field points. I did have a nocking point issue on the bow I was shooting. It wastoo highbut I adjusted it and the broadheads still hit about 6 inches low from the field pointsat 40 yards. Iplan onmessing with the tuning a we bit more andtrying them again. But right now I would notchange from the4 inch quick spins. I might change my mind next time out though.