In Qalia the Tar Jarhanishir (sp?) area was nice about that level.  A ton of small group type quests there are lead in quests for the 40+ areas to boot.

~QTM

Bounty Hunter quests for some pretty good armor for the level.  Dargun Tomb (Northern Border, Thestra) is great xp if you can get a group.  Berainaid Hills has some good quests if you can actually get through the fence.  Strandon and Dragon Backbone have a ton of quests around that level.  I personally did Dargun Tomb until about lvl40, but I had a standard group of 3 that I grouped with.  Not to mention, Thelassen over by Sleeping Moon is really good xp.  And you can start building faction for the must-have summonable shurikens.