The Sea Ray F16. Powered by the Sport Jet 120 HP Mercury Engine.
This boat is a load of fun, very easy to maneuver. One of the nice features is the throttle has the traditional forward/reverse mechanism. Many jet boats have 1 lever for forward/reverse/neutral, and another lever (or two) for the engine. The single lever on this model makes it very intuitive to drive.
The F-16 seats 5 passengers, 3 in the back seats and 2 in the front bow area.
This is probably the most enjoyable boat I owned. It is super easy to drive, it is responsive, light, and quick.