I fly a BE-1900 for an airline based in CLE. I think it is a very good aircraft for commuter-type operations, but nothing further than one hour. We actually have block times greater than two hours (CLE-IAD, CLE-RIC, CLE-ABE) which I think are excessive for a plane without a lav or flight attendant. Typically, the PT-6A-67D engines burn about 1,000 # per hour total while turning the prop QUIETLY at 1,400 RPM. It trues out at about 280 knots at FL 250. The aircraft is typically very reliable. Parts and experienced mechanics are abundant because the basic airframe design has been around for nearly 30 years. Crews with King Air experience are usually easy to find, although a BE-350 type and BE-1900 type are not the same. The fuel tanks hold about 4500#, which would leave you with only a 1,500# payload. When less than 2,100# of fuel is carried (typical fuel load), 19 PAX and bags can be carried. I hope this helps.