I tried out a Lumia 925 on my last contract. It was a decent phone overall, very solid feeling feeling phone with a good camera and a snappy UI. My biggest complaint is that Internet Explorer mobile is slow and for the longest time did not handle touch events properly (I actually wrote a polyfill for this one: https://github.com/CamHenlin/TouchPolyfill/ .) It's a completely broken web experience compared to Chrome on Android and Safari on iOS which is pretty unacceptable on a "high end" device. Microsoft should port Chromium or Firefox themselves and it would be a pretty fantastic device overall
There are a few third-party browsers like ubrowser that may give somewhat better experience.
I had a lumia 520, and ubrowser gave a better experience than Internet Explorer on that phone.
