For story, Planescape Torment. Still regarded as one of the best in the genre. (30-50 hours)
For combat, Divinity 1 and 2. I would play them in order though, because 2 is better than 1 (which is still good), but hard to go back to 1 from 2. I played both on tactician just for more combat and enemies use more skills. I love the turn based combat in these games. (both are 70-100+ hours long)
Since Deus Ex might be getting a remaster/remake ish type, maybe wait for that? Fantastic game though. (25ish hours)
For combat, Divinity 1 and 2. I would play them in order though, because 2 is better than 1 (which is still good), but hard to go back to 1 from 2. I played both on tactician just for more combat and enemies use more skills. I love the turn based combat in these games. (both are 70-100+ hours long)
Since Deus Ex might be getting a remaster/remake ish type, maybe wait for that? Fantastic game though. (25ish hours)