Wow, I haven’t seen a thread like this in…checks page…almost four hours! What a new and interesting topic! I’m sure your opinion will change the minds of everyone who has an opinion on this.
To answer the other question, Storyline feels faster to me, and if you’re playing an enchanter, you’ll want that for all the quest rewards you’ll get. Your milage may vary, but keep in mind that ToF still requires you to get to 60 for all the fun parts of your covenant.