I've shot a ton of different broadheads including all the big name ones. I'm a fixed broadhead guy. I finally decided Thunderheads were it and shot them for a lot of years. Then I tried the Tight Point Shuttle T. It really does fly better than any broadhead I've found. They do shoot with your fieldpoints. Because of the agressive leading edge they make a whicked hole. Penetration is complete. A bit pricey, but they do work.
http://www.tightpoint.com/t-lock.asp