Nope, tried windows phone before on a dell venue pro, samsung focus, and htc surround and while at first seemed new and fresh, quickly became stale and boring.
I much prefer a grid of icons for my apps instead of a long scrolling list. The live tiles for the most part offer little more information than an icon with a badge and are much more limiting than a widget. When i used it there was no folder support which i didn't like, not sure if that has been fixed yet. No notification center, the status bar disapears, and lack of quality apps also bugged me. Some games showed up in the app drawer while others you had to go into the xbox app to see them. And I really grew tired of that home screen with the black background, honestly it was even more boring than iOS. Maps needed alot of work. And the bing search button was annoying.
There were some good things though. The keyboard is among my favorites, only recently surpassed by the keyboard on BB10. The font was nice and some of the styling worked, like in the email and messaging app. The people hub is also a neat idea and how if you pin a contact to your home screen you get notified of just their updates. The os was also very smooth, on par with iOS.
Overall though, it just wasn't for me, and I haven't seen anything in WP8 that would tempt me to drop either my iPhone or android to get one. So even though the camera is killer, the os just kills it for me.