Diablo 2 - LoD - Necromancer - Bone Spear Mancer!

This is Diablo 2 Necro build that revolves around maximizing the talent, Bone Spear thru synergies and gears. I am 1 pt of talent shy of the finish @ lvl 95, and after BO, I am sitting @ 6.3k Bone Spear which isn't too bad~ But do you have any thoughts on Merc recommendation? Standard Infinity Merc or???