As a WM device user (AT&T Tilt-kaiser) I find the N810 a friend gave me interesting, but not all that useful. Granted, the biggest issue is the User. I am not linux savy, and never really liked it. I am a MS man, and not ashamed of it. My phone out of the box has been more usefull and more user friendly than the NIT after trying to play with it for a week. My phone is setup to dload my exchange mail, sync my contacts and calendar all over the air. I can RDP into my local server if I need to, again, over the air. While I am intrigued by the NIT, unless I find a way to install apps that I need to do what I want, it will most likely be used for only mp3's and videos while traveling. And to be honest, I do that with my phone now. The bigger screen is an advantage. But beyond that..nothing.

Please keep in mind, this is ONLY an opinion based on a week of playing with the NIT.