When we bought the HPX for my wife, to replace her golf cart, the salesman tried to steer us in the direction of a Tx or TS. We had an opportunity to drive any of the Gator models (except a 6x4), and he demonstrated one of the 4x2 models by driving it around the rim of a dry pond on their dealership. I can't remember if we drove a CX or not, but I was impressed by the stability of those machines traversing the side of a steep slope. We went with the HPX because I want to be able to plow snow on the steep road down to the back of our property.
I'd suggest you find a dealer with one and ask to drive it around. If it's what your wife wants, they'll probably be willing to let you try it on your property before purchase.