Yeah, for the extra 50 for the 6610 it is required you spend at least 40 dollars a month. I have had this phone, provider T-Mobile, for almost two months and I have to say it is pretty badass. Got it through Amazon (heh, was -50 dollars when I did it) You can still get it for free though after rebates. It has poly tones, very nice color screen, no camera though. It can use WAP which goes through T-Mobile T-Zones so you can get customize wallpaper, tones, games, and applications. It comes w/ a free 30 day trial for t-zones so if you want to customize it just call in and tell them you want to try it for 30 days.(Make sure you cancel the 30 day trial before 30 days else you will get charged for the next month) Be smart, and go to howardforums to find wap sites that give free tones and wallpaper instead of spending a dollar a song on T-zones.
Really cool phone, looks a lot more professional than most other phones out there.
-DtS