A lot of guys use a standard broadhead like a Muzzy or Thunderhead and add some kind of stopper to it. An example is the muzzy Grasshopper.

Another option which I like is to use a wide cutting mechanical. Some very good heads to check out are the Rocket Hammerheads/GKF Reapers, Rocky Mountain Snyper or Ironhead XP, NAP Spitfire, or the new NAP Scorpions.

Good luck on your search,oh by the way if you like a tradtional style head it is also well worth checking out the new turkey / small game head by Steelforce.