It was really the +10 quests that put the premium edition over the top for me, in a game where there shouldn't be a quest limit at all, see DDO please Devs, like maybe walk down the hall, and check it out, at least as it relates to questing.
So, premium it was and 5000 turbine points because if I can't get more than the legendary gave me for the same amount out of that (I only have 1 high level character, a Warden, unfortunately), I will be really surprised.