Now that I own the unrated cut on bluray and can actually see things other than darkness, there are several things I like.
Is it better? I just assumed it was the same shit as the dvd and never bothered with it.
I like the movie... ironically didn't much care for the parts in the daylight which were visible though. 
The Unrated Cut on Bluray is a big step up. There's a decent amount of extra footage and some of it's pretty gruesome. Some of it's pretty nice though, like some extra shots for wolf inside the crashed ship. A few shots across the film were tweaked, much to the better, I'd say. I'm watching it in the dark right now with my tv on energy saver mode, and I can see the predalien molting at the beginning and I can see wolf's walk through the woods and his investigation of the ship quite clearly.
The picture quality of this bluray is outstanding. Detail is beyond superb. I found the The Unrated Cut of AVP on Bluray to also be superior to the Theatrical Cut on DVD.
The edition I purchased is the standard one on sale in the U.S. It's the AVP Double Feature. Should run about $9-$10 brand new from Amazon or any major retailer. I've seen it in Walmart stores for the same price. The much improved picture and the extra footage really helped salvage both of these movies for me.