I've played Divine Divinity to completion, and overall really liked it. It was maybe a bit too heavy on combat (the diablo-esque aspect Freyar mentions), but the universe, though classic, had depth and was quite detailed. There was humor when I didn't expect it, unusual things to do.. I think the music was quite good too.
I've lost the game now, so I'd love to be able to buy it from here and play it again...
Didn't really like Beyond Divinity though... strangely, I dont remember why now, but I stopped half-way through it.
On the other hand, I've high hopes for Ego Draconis.. 15-20 possible outcomes to each quests (if that's true, thats great ^^) , mind-reading (at the cost of experience points to force you to think before using it), customisable battle tower, transforming into a dragon..
Gamespot preview Let's hope it turns out ok :)