These ISPs takes the whole enterprise very seriously. The ones who will survive know that excellent customer service is necessary to grow their business. You'll find technical support is available fairly quickly. Often tech support personnel will be on-call and work out of their homes with beepers. As the business grows, the tech support personnel will be in the office during regular hours.
Prices are competitive and service is often very good.
Look for expansion of local access numbers to various areas of your state. Some of these specialize in services to business. Large Businesses . These deal in volume. They aren't so eager to please, so customer service sometimes suffers.