I finally got epic flight form this weekend, and I just gotta say it is freakin' AWESOME! This is the best thing Bliz put in the game, imo. Well worth saving up the 5000 G, and H-Seth wasn't difficult at all for a Kara-geared group.
I've always felt that druids are the absolute best class in the game, but now I feel absolutely godly. To top it off, I gathered a couple hundred G worth of herbs just flying around for an hour or so. So if you are put off by the high cost of starting the quest line, I say go for it. I guarantee you will not regret it.