Nokia 520 users: are you happy with it?

With all the news lately about MS and Nokia, I've been looking at the Nokia product line up. I'm getting the impression that the Nokia 520 is a pretty decent budget smartphone.

I guess what I am asking for here is a bunch of mini reviews. If you've got the time and inclination, could you write a paragraph (or more) telling what you like and dislike, and whether the phone is a good value overall? Thanks!