My weapon of choice is the 2h Mace.

Reason being I find the dmg to be a lot more averaged than the spear. The spears dmg in my opinion, is just too jumpy to rely on even with its slight increase to melee speed.
It really is preference though since they both can work well.
I do though find the spear to be better looking.
(Chimpunko) For both builds I would run the 2h mace.