I really really like it, but there is no way it could live up to the hype it had going in my head.
That said, they really did improve and fix a lot of the problems from 3. Even if we all know we will have to buy DLC to keep playing after the ending.
I got lucky with the bugs though, the worst thing to happen to me is my companion vanishing, and reloading a save fixed that, even if I lost an hour and a half of play time, it's still pretty small compared to some other bugs people have had.
I am a bit annoyed that they fixed the free repair thing though. I actually deleted the game data after patching just to get the repairs done one last time.