A tough call--love it or hate it. I have an HX, I love it. It's bone stock just start and go. I actually like it as my long range missile. Meaning, it's my cruiser ski that can carve when I want it to. I just cruised 53 miles on it the other week and it was perfect. It's fun as all get out and takes some getting used to, I'm about 70% confident about throwing it into an ultra hard turn but I love to cut some hard turns on it. The reasons I like it as my cruiser are the suspension seat and it just eats wake like nothing, where as on my 96 XP I would be popping all over the place. You also have to remember it's a solo ski, but I ride my 5 yo daughter on it but she weighs like 45#. Once you get your sea legs on it and figure out your center of gravity(for me right against the bars) you can balance it out but it take some getting used to, boarding can be a bear but I just let it pull me on as I reach over from the left side.
As far as parting it, that is a tough call. If it has a pipe with electronic water control that is complete, you could probably turn a few bucks from that $350ish, but I think that the HX pipe is different from the 95 XP 720 skis. If it has a UMI set up for the steering you could probably turn $350-$400 for just the steering set up. The engine, if solid you can get money for that, but with the pipe, keep an eye out for that compression on the PTO cylinder, they like to fry them. It has the purple trim, basically worthless, everyone want the 96+ black trim and will pay good money for it. Guys try and pull good money for the rear hatch, and I have seen them sitting on ebay for over a year. Hoods, too heavy to ship. Pump is worth $125- the manual VTS set up can bring $30, then your down to the MPEM and cables. I bought my seat(needing recovered for $60ish shipped). At $600 if you parted it you would make out OK, provided the engine is good and it has a full UMI steering system on it, otherwise, tough call. Best of luck with your decision.
Here's what it could look like, mine is a 95. You can see my build thread in my sig line below.
