OB - Which Build & Empower?

[Stymie]

I'm actually making four archers, because I didn't decide I wanted an archer in CB, so now I need to test everything in OB =/

Build #1(PvM): 3:1 STR:END
Pretty straight forward, a damage build with a bit of END. Going to use a crossbow.
Build #2 (PvP: 2:1 END:STR
My PvP whore XD. I'm not sure if I'm going to make this an archer, all I know is that I will have a PvP account. Going to find out all the skills for the classes, and decide on my PvP class. Anyways, if it does end up being an archer, it'll have enough END to tank a few hits and enough STR to actually kill people. Will use a bow.
Build #3 (PvM): 1:1 STR: SPR
Testing this for efficiency, to see if it'll be faster than build #1. Will use a crossbow.
Build #4 (PvM): 3:2:1 DEX:STR:END
My weird build. Doing this for testing to, and it's weapon of choice will most likely be a crossbow.

I'm going to hold some tests once all of my PvM builds hit 15 to see which is the most efficient, and that is the one I will continue.