Server advice

So I have decided to make a alliance warrior and want some feedback on server choices. I already have a horde one on the pvp server for awhile, but I want to make this new warrior mainly for pve. Being that it is alliance I cant decide between the pvp and pve server. I'm pretty sure the pop ratio for the pvp server is in favor of horde, but i haven't tried the pve server yet. My main concern is having enough alliance players on my server of choice to make it worth the time I will put into my new character. Either way please give me some feedback on some broad server pops and how many alliance there are on each of these servers possibly. thank you!