The Agusta 109 is one of the most popular VIP helicopters, used worldwide for fast, comfortable transport of up to 6 or 7 passengers with 1 or 2 crew, depending on the flight requirements.  It is powered by twin turbine engines, giving an added level of safety compared to smaller single engined aircraft.  A maximum speed of 177mph makes it one of the fastest helicopters in the world, although trade-offs need to be made between speed, range and payload (i.e. passengers and baggage).