For true turn based RPGs not named final fantasy you probably need to go back to the 1990s. KOTOR is also essentially turn based although it sort of plays out in real time.I didn't like having to pause to give squadmates orders. I always preferred the "old school" turn system where every person in your group automatically had their own turn. I know that sounds nitpicky, but it really affected how I enjoyed the game. I also get why some might think my preference is "clunkier."ME is substantially less work than FO and can also be paused so you can give squadmates orders. Might try running through that series again on easy mode. ME easily has the best story of any RPG from last gen, and is also way more "on rails" than most RPGs.
As for the story, I've heard great things about ME. I guess I just couldn't get into it.
Re the ME story, if you just jumped into ME3, you didn't really give it a fair shot, IMO. (See discussion on the last page about trying ME1)