I'm DMing it at the moment (had a 4th session last night) and it seems that both my players and myself are enjoying it. Of course I have gone to the lengths of changing the ecology of the region (out with the Orcs and Kobolds, in with the Duergar & Drow as well as changing a lot of the fiendish creatures into actual low level fiends).
In my spare time, I've been flipping through the different regions and trust me when I say that the monster selections spices up the further in you go, though there is still some repetition.