I also a turkey bowhuntin' junkie and have tried all kinds of b-heads with good results.
This season I'm most excited to try these two.
The new G5 T3 appears to be a awesome choice and with their intechangable "spider clips" that allow you to actually set the sensitivity of blade deployment (for instance a stiffer clip allows you to shoot though blind window mesh), these are going to be a great choice!
Another B-head that looks like it's going to be an awesome choice is the new NAP BloodRunner 2 ! With a monster 2 3/16" slash wound.... this baby is gonna slice a Tom down!!!