I've had the game since release, and have had a lot of fun with it. This game isn't like Baldurs Gate (or any other RPG) in many ways it is like a version of Diablo 2 which has been slowed down, and then party control added.
I haven't noticed any serious bugs with the game, although many people have. The only one that affects me is the game runs at around 20fps, when it should reach around 50. The reason for that being, it has issues with the NT line of OS's, such as Win2k, XP etc A patch is out within the next few days which should remedy this problem though.
Buy the game from a shop with a good returns policy, or if you have a fast connection download the demo of it, see what you think.