I have been with t-mobile since 03. It has been adequate for me since I only want to make calls and use the calendar and alarm clock features. It is a plain candy bar type which comes free with a plan. I have been out of contract with them for about 14 months. Recently I have noticed that many of my incoming calls are going straight to voice mail. The phone doesn't ring when the call comes in but shortly after it does then I get a "beep". This is annoying! I took it to t-mobile service reps at a mall kiosk and they didn't seem to know anything (they told me that i should increase the length of the ring tone). I would like to switch to ATT but from what I can gather from the web their service is almost as bad if not worse. 
I also wanted to shop the internet for free phones along with a plan but I have never done this before and I need to know who on the net is trustworthy. The rebate are pure bull! They promise that you get a free phone and an additional $50 etc. via rebates. I will not buy anything with a rebate unless they are a reputable store that will honor them. Panasonic tried to hose me off for $100 on a fax machine. I never got the rebate. They claimed that all the rebates are handled by a 3rd party dirt bag in south jersey. These people of course denied ever receiving the rebate request. When I went to the store(office max) where I bought the fax they gave me the rebate in cash right there! Any comments or advice would be welcomed. Thanks in advance.