If you're fortunate enough to have a garage full of sports cars your next purchase must be a Silvestri speedboat - what we like to call the Porsche of the sea. The devastatingly handsome 23-foot vessel was actually created by the makers of the Spyker sports car and it shows. It features all sorts of high tech gadgets and stylistic points that you expect from a superior sports car, from remote control hatched compartments to a sleek leather interior. Oh, and a ferocious motor to be reckoned with. It's enough to make James Bond proud. - Orlando Evans