Grounds of Valor alliance camps usually, some common camps are Gusgen(11+ page one) and Crawler's nest (31+ Page 1) then Bostaunieux Oubliette until 75 when you can join abyssea alliances. What makes GoV better than FoV is that exp increases in increments within every completed page until you reach the cap amount for that page and also prowess an extra bonuses for completing a page like max hp/mp, skill ups, th, killer effects, etc.
For solo /dnc, for alliances usually war.
With the introduction of keying in abyssea 30+ and grounds of valor alliances made the demand of low level gear drop considerably, as you can level all the way to 99 from 30 (barring limit breaks of course) by keying abyssea and with grounds of valor you're level synced, so upgrading every 10 levels or so would be norm for GoV camps.
Edited, Jul 8th 2013 10:11am by Szabo