Many registered agents exist in each state.  Many are competent.  Not all can grow with your business.  Choose a national registered agent service for your business, and as you expand your operations to additional states (whether it is a new office or a salesperson in an adjacent state or on the opposite coast), you can quickly and easily get established in additional states and have your registered agent services consolidated with a single provider.  This will eliminate annoying bills from multiple service providers and will help you keep track of your filing needs.