Yeah I check it out that site. there is nothing information nor open video clip. what is your specified point?
Oh, not again... Its look like I am "L.D."? Oh man.. For the truth, I didn't ask you about ATT and TMO's 3G frequencies.. your concerning is not my thing. because I knew it already, someone from treo forums who unlocked his AT&T palm (750 series) treo on tmobile, and One of my friends "in live" person who has show me his the unlock 3G tilt on tmobile, its work with Wi-Fi, EDGE, DATA, and VOICE. but it has lack of 3G. For reason He like the tilt specs more than the wing. They did example me T-Mobile uses different frequencies than AT&T already before you post this. See They are unlocked user as good explain!
I acknowledged that I'll be stuck with existing WIFI, EDGE and DATA network without 3G for the near future. I myself was ex unlock device in past, but I didn't knowledge nor experience enough.. However, Now I have more knowledge and confidence about unlock and stuffs than ever.
I REALLY hate to say that you have lack of experince with the unlock any device on carrier. but thank you for your concerning.. 
Really? you say 65% business people who satisfied with iphone? where the link? prove me, please! I love to research it with information, because you said " research on your own". Unfortunately you did not provide me the link..
i can't suggest nor tell you should go with device.. its depend on your feeling device's keyboard comforts in your hands. carrier is fully coverage in your location, that is important!
Yeah, Blackberry can hold 10 email accounts. thats what blackberry is pushy email for! what is your treo ?
I ain't gonna to quit tmobile service. Because I am very happy with their service since 2002.
I wish you the best luck with different carrier. 
PAC, wow its look like that I am "L.D." or something? you better bug off from me about switch to att and check deafclimber's post, please.
I don't think so that tmobile is sucks! but you sucks.. thats simple!