The other posters in this thread know more than me, so listen to them. Assuming that you want a more playful Super Jet, you will be looking for a 1996-2007.
Personally, when I buy an older vehicle, especially a vehicle which is popular with younger men whom may have gotten caught up in the "modifying" fad, I try to buy a pristine, visibly less used vehicle, in its oem stock form. And I am willing to pay more for it in lightly used stock form.
When you start from a "garage queen" relatively unused and thus likely less abused vehicle in its stock form, you can always modify it later. And you can make a decision about how and what to modify and really learn from making the modification(s) yourself.
If you buy a visibly more used, modified vehicle, you better have it checked by someone who knows what to look for, or you better have some reason to trust the knowledge and experience of the seller and you better test drive it yourself.
You are doing the right thing by asking questions here.
Since you are less into rail carving race type riding, you are looking for a 1996-2007 Round Nose SJ like
@Sparkplug said.
That said, the engine compartment of the '02 looks clean and well taken care of and deserves further inspection and investigation. But consider
@kevbo's concerns, he is a pro jet ski repairman.
@WFO Speedracer is an experienced professional jet ski repair man of few but very accurate words -- see what he said below.
