Heavy INF or Heavy xbow?

[Maroon]

Crossbow damage is not increased or decreased by WPF.

On the subject, Maroon is giving very good advice. You said you enjoy ranged combat, so go for T4 Xbow, it is very powerful and useful. A crossbowman should not be playing like he was an infantry, so the weaker armor and melee weapons is not a large loss. If you feel it is, go for the aventurier hero class for stronger 1handed weapons.

Ah, right, "Crossbows" was the only exception to that, wasn't it?
Anyway, WPF means Weapons Proficiency, the points you can stick in a certain weapon type in singleplayer to make him better with a certain weapon type.