Another option to consider, as I found out when I just purchased mine, is you can buy warranties for used cars now. Since this is my first 4WD, and I have heard many horror stories about when the 4WD goes bad, I bought a 4 year/unlimited mileage bumper-to-bumper warranty with mine. Most banks/credit unions offer them, even on my 1999 IronMan.
My son was a service manager for Toyota, and he said why not? It's cheap (well, not that cheap) peace of mind. All dealerships, not just Isuzu honor them.
Hey, it even covers the window issue! I hope to never use it, but it helped me be more confident in buying the VX.
They offer different levels of coverage for different prices. Just some food for thought....Robert