In my opinion, with so many phone services to choose from, it is important for small business to strongly consider the need and use of the service they choose. For instance, some pre-paid service offers are comparable to contract service, in some cases. Be mindful that some prepaid services have coverage restrictions and you may experience outages during peak hours of the day or week, dropped/lost calls and data transfer restrictions. But if you are a start-up and need optimum service on a limited budget I, personally, recommend either Virgin Mobile or Boost Mobile, Small Businesses with increased cell phone budgets, have the luxury of buying service and perks. Therefore, I recommend AT&T or Verizon namely because you can broker a very good deal with either AT&T or Verizon for a group plan - predicated on the number of phones and the planned amount of usage. In addition, Microsoft is introducing a phone service that could be a combination of optimum service, coverage and bargain prices... just a though.