Darvond: Let's see, … I'm thinking: Planscape, Icewind, Neverwinter.
For reference, my nearest point of reference to any of these is Avernum/Geneforge.
DadJoke007: Planescape: Torment if you want a great story, but the start is kind of slow and the combat is kind of sub-par.
Icewind if you want great combat with story that is kind of sub-par.
Regarding Neverwinter Nights, I've thought about starting Diamond Editon myself and try out some player created campaigns. From what I've heard, the main campaign isn't that great - it's the mods that make the game.
You didn't mention whether you had completed any of the titles.
When my harddrive died earlier this year I had save games for all of these. I have previously completed all, save
Planescape, which I was happily plane-surfing when the catastrophe struck. I now have save games for all of them, at various stages of completion, awaiting the urge to take me.
I was through the first part of the first
Neverwinter, past the betrayal, and now I am lacking the motivation to re-complete this bit. The
Undretide expansion starts okay, but I know there's a lot of scorpions later in the desert that doesn't lure me, and I can't decide who to take with me as a companion (last time it was Deakin). The
Underdark is compelling, but high-level play means dedication; the fights require preparation and the tiny lettering on my screen doesn't lend itself to reading a lot of puzzle explanations. I want to play the latter chapters, but I worry that my specialized magic might be the wrong school, etc., or my companion might be boring. (Again, I took Deakin on the first completion.)
Icewind Dale I completed solo, without thinking about it. This time I wanted to play with a party, but I find the early battles tedious with them. The sequel is punishing micro-management step-by-step fighting across each square of the large map. Can't quite get there, at the moment, either.
Planescape is appealing (lots of reading!), but it starts slow and the combat (I'm thinking specifically of the underground section of the city) is difficult. (I had a save after collecting all the experience for the various sensoria, and that seems like a huge mountain to climb, from here.)
The third NwN is probably where you want to be, I think: It should scratch the itch.
Right now, I'm playing some UGC for
Shadowrun.
(Specifically, the
Vox Populi port of the first game into the third engine, and another playthrough of
[CalFree in Chains).
edit: hyperlink syntax