What cell carrier do you have, are you happy with the features and costs ?

[Bondonutz]

As you might have guessed I'm cell phone carrier shopping, I've ben with T-mobile for 9yrs (they changed names 3 times during my tenure w/them)
Anyho, I put my wife on my account 3 yrs ago and we have the "family plan".
When I added her I elected for what I thought was unlimited text but when I got this months bill for 115.00 over the normal bill due to overage I realized nope. Now I have what I thought was a pretty good deal for her and I for the month for $119.00 with only 300texts for me. After talking with a few friends I realized there are better deals out there but the coverage/service is lack luster. One thing I'll say about T-mobile is that I get a signal anywhere even 15miles out in the Gulf of Mexico.
Internet service on the cell would be really nice and a hellava bonus because to have but T-mobile wants additional $50.00, I cant justify that when we have 3 laptops in the house ?
I would appreciate you guys advice and experiences with your carriers.