Liked the first one much better -- this one has too much "filler" content simply to make the game longer.
The sequel is longer, but there is a ridiculous amount of "filler" in the game. And a lot of pointless back-tracking to locations already visited. The game feels rushed. The story, especially when you get to the frozen castle, is just non-sensical.
But the worst thing is the maps themselves: you are essentially fighting along serpintine narrow paths with occasional small open spaces that lead you from one of the screen to the other end. That's about it for the whole game. I'd rather play the first Icewind Dale again.
The tactical battles were much more intersting in the first Icewind Dale (with the add-on and patches).
For those who like tactical games, try the first one.