He's asking for an opionion from someone, not a definitive listing of the best servers.
And IMO (I've played on 5 servers) Lucan is the best, theres lots of quality guilds, great people and our economy (or so i've been told) Is one of the best. If you do decide to reside on Lucan hit me up with a tell on Daki or Panzzer or hit up Mearyk and we'll get you set up right.