The salt water will eventually attack your electrical connections, switches, and components. They are sealed pretty well but it will happen. Buy one that has not been in salt water so the clock starts at zero for you and then sell it so the next smuck gets stranded
Sea doos used to be the fastest and also most unreliable but that was 15 years ago. They got much better and are probably the best choice for at least the past 10 years.
I would not buy a kawasaki.
Dunno about the hondas.