2 seater....
If your the only two in the family, then why would you think about getting the three seater? The three seater verses the two seater is like the difference between a station wagon and a sedan. The 2 seater will be more sportier and a bit faster, sharper turns and agility. The 3 seater will still be fast, but will be more stable, less initial power burst......so, really, the choice would be based on whether you want sport, or comfort.
Oh, BTW, I'd think about another type ski than a DI model. Not that it's a bad ski, there are just a couple extra systems on them that have been known to cause a few problems. Namely the compressor used in the Direct Injection (DI)........so, if you can find a RFI (Rotax fuel injected) or even a naturally aspirated ski, you may find yourself with a more reliable, less down time, type ski.
I hate saying that about these nice PWC's.....but in my experience, if I were going out to buy one and wanted fuel injection, it would be the RFI....
Sorry to all you DI lovers.....it's just my preference!......:cheers: