I always did elves, ashes, mages and dwarves.
Ashes can get boring but it's nothing compared to mages and dwarves. Mages is too long and nothing happens and dwarves is hey I've been to this cave before oh no wait I have to fight Deepstalkers for the 4515414515845147847847845541846541561451548484848th time so I guess it's new but I couldn't make out the difference BECAUSE EVERYTHING IS THE SAME. It lasts forever as well.
Endgame is pretty neat, though I have to say (and I'm in the minority) I probably liked DAII more IN HINDSIGHT. DA:O topped my favourite games of all times lists when I finished it(now I'm more Mass Effect 2) but when I was replaying it I wanted to kill myself during those parts of the game. Just sayin'.