Dont see the point of this post, Server Owners are going to be telling you "there" server is the best and peole playing on them servers also posting the same etc.
Bascially you Choose between which server you would preffer to play - either:
Judgement of Blood (Large maps) or Prelude to War (Small maps). You then look at the Exp on each server - do you want Low or High rate for example. As for people online - most have a Server Sig probably showing numbers online.
Some servers have very good teams and know what they are doing, been up for a long time (years) and have high number counts (Olypia, Illusion, Xtreme etc) while there is the "grab the LS files and chuck a server online" Bunch who have just come online and are a bit wet behind the ears in terms of Server Dev - I wont mention names here..