And local calls may or may not be free or cheaper than long distance. The charges vary greatly from provider to provider. One neat convenience of wireless is that one phone number can follow you anywhere, even to some other city. Someone dials and you can answer. Plus you don't have to find a pay phone or a credit card when trying to call while away from the office.
Some carriers offer special rates on calls from employee to employee.
Except for those with Internet access and other specialized features, all models have the same standard features. The major issues are size and battery life. Cute phones may cost more because of the design. Also, if necessary, find out what the company charges to have extra phones on the same account. For some, it is one town.