The biggest benefit to doing them is in gaining the XP for leveling up. They're also good for a ton of XP if you're looking to get the L.S. title without taking the whimpy route of grinding out Kilroy's.
Besides that, the ones in the Echovald Forest / Jade Sea can give you a nice little shot of Kurzick / Luxon points if you're going for either of those titles. (You'll need to farm up 10,000 of either faction to complete the story-line) They're especially heplful if you do the quests whenever and then wait to collect the quest rewards until a double Luxon/Kurzick rewards weekend. It doesn't sound like a lot, but anything you do to cut into that 10,000,000 point requirement helps.
Last edited by Kook~NBK~; May 26, 2012 at 03:31 PM // 15:31..