It's hard to say if you will like the old games, as I don't think Torment: Tides of Numeria or Pillars really capture the classic feel. I liked the Pillars games well enough, but it's like something is missing. The modern game most like the classics is Pathfinder: Kingmaker (which is my favorite RPG of the last 15 years).
Old games:
Planescape: Torment is my favorite game of all time, and I don't think there has ever been anything like it since. There is a lot of reading, and you need to read all the quests to really get into the game. I have not played the enhanced edition, so don't know what they did to it to comment.
Baulder's Gate 1 and 2 are going to be more similar (and superior) to what your playing in Pillars of Eternity (as opposed to whatever Tides of Numeria was). The Enhanced editions are fairly well done, and I would recommend combining both games into the BG2 engine and playing it as one long game. How to:
Baldur's Gate: Enhanced Edition Trilogy
Icewind Dale is its own thing, and not quite as good as the others, but still worth playing.
Arcanum: Of Steamworks and Magick Obscura is often talked about in the same group; it is going to be a bit different, as it has it's own rulebook and combat system. The combat isn't great, but the story and atmosphere are.
Temple of Elemental Evil is worth looking at, if you get through the others and are happy with them. It it much more combat based and they kinda ran out of time for making a great story.
Slight Edit:
Modern games:
I agree with
@Randin and
@Chanur that both Tyranny and D:OS are in high standing and capture those CRPG feels in their own way. Tyranny is more like the isometric classics (with an evil-ish twist), whereas D:OS goes it's own way and shows what turn based combat can achieve.
