I have a Lumia 800. Honestly, I say get any Lumia phone but this. Lumia 800 battery sucks donkey balls and they always say how the next update fixes it but not in my case. Could be a bad unit but I don't hear anyone complaining about the Lumia 900, 710 or heck, even the Chinese ass 600.
If you want a Windows Phone, either get a cheap first generation like the Samsung Focus (best first gen WP) or the Nokia Lumia 710. Because it's not worth spending much when Apollo (Windows Phone 8 ) is right around the corner.