I bought a tracphone for my teenage son. Since its prepaid, I don't have to worry about receiving a huge bill for airtime. Myself I use Verizon, around here it has by far the best coverage. Since it's just me I don't need Nextel, but we use them in the fire department and I have also used them when I used to drive for a construction company, and they work very well. Tracphone is way too expensive for business use.