I LOVE the new NAP NITRONS.. they dont fly any different than my field pointsinfact they didnt change my patterns either, and they are around 28$ for three. not a BAD price. I also shoot 100 grain, on a gold tip hunter 55/75 at 29" draw.....
BowTech Liberty if you were wondering which bow i use.
i woudl RECOMEND that you go to your local proshop, and test out heads... they usually have some that THEY have tested. my pro here allowed me to test almost 8 differnet kinds of the higher end broad heads and even a few expandables. i liked teh NITRONS best they didnt change between my field points and they had great penetration. i cant wait to try them out on soem deer