Hello Saku! Welcome to SA! I have to agree that it's a hard question to answer not knowing what your needs are.
I happen to have Sprint. I'm not sure if it's any better than ATT or T-Mobile or any of the others. Some features are great with one company, but you give up something to get great features with another. It's all a trade off.
My whole family has changed to Sprint so we have unlimited mobile to mobile minutes. Texting is big with kids and adds up. So many features now, with pix and flix and ad gimmicks! It's enough to drive anyone insane.
RE: Land line. No offense to SBC/ATT employees, but I HATE that company. That being said, if there is a power outage, you will still have service to call out. Time Warner is the other big land liine game in town, and your phone will not work if the power goes out. I have had "issues" with both.
I did like having TW initially because I had cable, DSL, and my land line all on one bill. Life needs to be simple. But now I see ATT advertising the same.....but I know nothing about their computer provider.
Steelman mentioned private numbers.....

Errrrrr! When I had SBC (now ATT), I had my first initial and last name listed with no address. As a newly divorced single mom, I wanted that security, but didn't want another dumb fee on my bill. This was a huge mistake because I was listed for example as "J Doe.....555-1234". There just happened to be a number of "J Does" (John, Jan, Judy, Josh etc) that were being hunted down by credit colllectors!!!

I could never get them to stop calling!!!! They even put MY number on these people's credit reports! It was a nightmare. When I called SBC to request a new number and unlisted, I was told I had to pay a fee for it being unlisted. They allowed NO exclusions and I was told the FCC MADE them charge. ??? So I called TW and they didn't charge for an unlisted number. ??? I asked how they got around the FCC....and they said they weren't required to charge. I knew something was up, so I called SBC/ATT back and got a supervisor on the phone. She said actually it was the Public Utilities Commission, and that they don't "MAKE" them charge, they just "approve" ATT's request to charge! BIG diff......I explained to this supervisor that their lower level customer service reps needed to be trained to give out honest information. She apologized and said she would mention it.

Now I hear their fee is even higher for unlisted.
So....again...it's a trade off....but I've also gone to all cell.
Sorry for being so long......I suppose this was more of a rant!

