I have a Nokia Lumia 520. It's almoast in perfect nic if we don't count the teeny-tiny scratches on 2 corners. I drop my phone very very rarely and I always keep it in a small case thingy.
Also, I don't recommend Windows Phone 8.1 (yes my phone updated itself to 8.1 recently). While it's good and all, Android is better. The only customization you can do to the menus and main screen is change the colour. You cannot choose a wallpaper, the main page is just the icons of different apps which are squares you can arrange however you like.
Oh, and did I mention the lack of apps? Seems like half of the people don't bother converting their apps to work with Windows Phone.
Basically the reason I'm getting a new phone (most probably some sort of Samsung) for my next b-day :p