Saronia seems pretty quiet; La Noscea and Black Shroud are really devoid of players. Thanalan is packed though, seems everyone goes to Ul'Dah now. What's irritating is that the Market Wards are almost empty in LL/Grid so if you need new gear you have to go to Ul'Dah.

Sort of a pain when I'm grinding for ARC marks in Grid, then have to go to Ul'Dah to get new equips, then back to Grid again.