I played through a few months ago. Awakening was alright and rather substantial; Leliana's Song sucked; Return to Ostagar, Stone Prisoner and Warden's Keep were short and sweet; . Didn't do a few of the other DLCs, though, because I no-lifed the game for what felt like 100 hours, lol. I hear Witch Hunt is good, though.
If you're in a hurry, just do the short ones and Awakening and skip the others. Return to Ostagar is just a small detour where you get some armor. Could probably skip Warden's Keep, too.
Take me down from the ridge where the summer ends
And watch the city spread out just like a jet's flame