Charter companies offer a tailored service in which the client has a choice of meals, drinks, staffing levels and additional services. Tour companies aim to maximize profits, so public charters usually only provide a very basic service to passengers, with a cheap -- or no -- meal, minimal staffing and low baggage allowances. With a private charter, organizations can take advantage of options such as video conferencing, business services and corporate branding. In-flight meals are of a better quality, and passengers do not have luggage restrictions. With public charters, passengers still have to stand in line for check-in and security, so they need to be at the airport two to three hours before the flight. With a private charter, you can pass straight through security and onto the aircraft.
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.