Infinity base for merc

Hi guys, I was wondering since on this server merc is allowed to equip amulet,glove, belt which can give an extra 50ias. Does this change the best choice when it comes to making infinity? Which base can give merc higher jab with high ed?
Would appreaciate if someone could explain to me.
Thanks

 

giant thresher or thresher is the best choice. bellow that you can go Cryptic axe and the lowest option is CV

 

As @zguby said, the best options are giant tresher or tresher.

@allenhe77 Both of the options might seem inferior, when u compare their avg dmg to other polearms, but these two weapons are by far the fastest amongst all others. This means that they are able to deliver other types of dmg (critical strike, deadly strike, crushing blow!) faster, which results in overall best dmg of all available types of polearms... for better understanding you can use random googled attack speed calculator for d2...