I want to input this message about blackberry. Myself, I bought the 8700c with cingular. I enjoy with this much and easier than the last time I had way back in 1999. The Cingular used to not much coverage benefit for Wyndtell. I am not interesting those that time cuz Tmobile have good signal and service. Somehow; their service went on and up and on and up. I don't know what went wrong and call them to find out. They have trouble with system server to catch up or need new server to expand and be faster. They haven't improve with server of process with the email.
I give a try with Cingular again since they bought AT&T Wireless service. Its good thing that has already expanded and improve. I think that Cingular is good for now.
Sprint and Nextel, I wouldn't use their service if I were you cuz their limitation that just like Cingular in 1999.
My 8700c is 49.99 unlimited data and 1,000 text message. I think thats good enough for me. If you need cheaper device to buy, let me know I can find two of them. They do require credit check.
So want that share that I have learn in my past. Good luck.