I would say that the up front process for SBA loans is generally going to be more arduous in terms of paperwork than with conventional bank financing. Generally, the only reason someone would go through the SBA process would be that they couldn't get the financing they sought otherwise. In some instances you might be able to get a better rate or structure with the SBA, so that might be a consideration.
Generally, once you've gotten the loan, there isn't too much of a hassle difference, although it may be that some banks might do NON-SBA financing with less reporting requirements.
Whether you choose SBA or not, you will be dealing with a local banker, unless no banks in your locale offer SBA guaranteed loans. I believe the BIA also has loan programs, but I'm not familiar with how they work.