Heavy INF or Heavy xbow?

[dooomninja]

Tbh your best bet is sticking to the class you want to be tier 4 at. Think about later on for the last 8 levels where you will be 0-2-3-0 where you could have tier 4 kit you only have tier 3. It takes long enough with an arb, and sinking a lot of assist into getting a powerful xbow would make it take even longer. So that's my advice go heavy Xbow

Also the kit you have at tier 2 doesn't matter as you will want to replace it as soon as you can anyway