I had a 03 Honda aquatrax. Loved it. I think I broke the turbo on it towards the end but not sure. Didn't seem as fast as it was the previous season (pro tip, don't sub a couch lol). I would like to get another one if the right deal pops up in the future.
I would say unless this guy has an amazing deal I would hold out for a fun to Honda to pop up. Just my thoughts, I never rode a non turbo but I think there was something like a 50hp difference. Probably mostly top speed with the turbo, which is the whole point of a couch I would think.
I had an hour meter and would think they all do. If the menu screen works you should be able to scroll hours, timer, and clock from what I remember.
As for seadoo I hate seadoos. But some of the new ones (although mostly cool looking plastic parts) look cool. I see a lot of people getting the rxp, rxpx, ext, etc.
Depends what they are used for. If this is to get into jet sking I think most people are going to tell you to get an AM hull or a roundhouse superjet haha.