Ditto on the oil, CD, and windows.
Also, look out for a bad ABS system. That's a $3,000 repair if you care enough about it, and it seems to be relatively common. I suspect a large percentage of us just drive with the ABS light on, though.
There are sometimes EGR problems, and a transmission mode switch tends to go. If the vehicle's been raised, take a glance at the CV joints.
The thing is, these are all more or less easy fixes. I wouldn't let any of these prevent me from buying a VX. What should prevent you? Well, if the engine has any evidence of being run without oil, I'd want someone to look into it. Replacing the engine or transmission just doesn't sound fun. Everything else is doable with parts swapped from common Isuzus.
In then end, though, you just might just do what myself and others have done: Buy it sight-unseen.