At 55# of draw weight, the variables impacting performance for your set-up are different than for mine. My typical poundage is 45-47#, with occasionally lighter poundage when my shoulder impingement is particularly annoying.
That said, a super sharp Grizzly El Grande 190 with long inserts is my hands-down favorite BH on my carbons. However, my second choice is the Muzzy Phantom with bleeders at 220 grains. Both of these broadheads have performed amazingly well and do serious damage.
If I was required to select one BH and only one for all of my hunting applications...the Grizz would win. These BH's, though difficult to sharpen, are simply the best I have ever used.
Claudia