Since Boeing decided to modify it with additional exit doors, offering MORE seating capacity, for up to 205 pax. I really never understood the reason for the 737-900 as initially designed, anyway. It has slightly LESS range than the -800, and aside from additional cargo capacity below, it could only carry a maximum of 189 passengers, same as the -800. So why would a potential airline customer opt for the -900, as Alaska did, for example? I wonder if current 739 operators will retrofit their fleets with the added exits? Continental and KLM operate both the -800 and -900, which doesn't make a whole lot of sense to me. Maybe someone here, can shed some light on the subject.