The rage 2 and 3 blades are really nice, not cheap. Same for grim reaper. One is a rear deploying blade, the rage, that allows for more penetration with less loss of energy and no deflection on quartering shots. Grim reaper deploys from the front. Very reliable, but there is risk of some deflection, though negated by its newer styles over the last few years, and there is more of a loss of energy.

I think those are two pretty good heads to choose from.