Haven't played it (nor Mass Effect, actually) though heard good things about it. I have played SWTOR which is also BioWare and from what I heard from people who've played ME series you can feel that. If you play the class storylines, you end up with a more diverse MMORPG than something like WoW which is practically the same for every class -- until the last expansion, Legion, but still not comparable to SWTOR. SWTOR's user interface was laggy though (not sure if it still is) which made competitive PvP a joke. The raids were lackluster as well. But the stories, I can recommend those. Not to say the WoW storyline of Legion wasn't epic; but only once IMO. Not enough diversity.