If previous Yamahas were dragsters, the FX 140 is a Lexus. It has a linear power curve, unlike the front-loaded acceleration you get with two-strokes. The Sea-Doo, meanwhile, is perfect for novice riders who want to go cruising. There's a digital instrument panel with compass headings, a soft ergonomic seat, and a power-assist mode that adds thrust during slow-speed turns to ensure stability. It's great for rough water, though not as nimble as the Yamaha.