Hi Kim! I keep seeing you in battlegrounds all the time, so clearly you're an active one! Both Alliance and Horde on AP are considerably more active than any other server. Indeed I haven't heard any reports of any other server even trying to get together a cohesive community like we have... and the momentum is exponential, for the more we have, the more we attract.
So don't let any lack of answer here be an indicator of in-game activity. You can always do what many of the Horde AP players do, and roll an Alliance character! I cannot really make a direct comparison between the two communities, as I am only on the Alliance side and I am personally so entangled with the day-to-day activities on Alliance AP that I can't be objective anyway, haha! But you might just find that you like it. Worth a try!
I hope you find the community you're looking for! I was originally a Stonemaul player myself, but when I heard about what was going on here on Aerie Peak, I abandoned all my F2P twinks and started over here. I have never regretted that decision even the slightest bit!
See you around!