The xtra12 is decent. I don't think it's all that much different/better than the xtra10/standard suspension of those days.
Not trying to be a jerk and I understand everyone is in a different situation- but that is a 15+ yr old machine. More importantly, it's 15+ yr old technology. I would think you could pick up an early edition REV or other rider forward sled for not much more than whatever they're asking for the XLT. If you look around, I would think you could find a decent one fairly cheap. I sold my 04 800 edge (that I loved, and still do) for an IQ. I had no issues with my old sled, but you just can't compare the ride and handling of the old setup to the new. At the time, the edge was supposed to be the dream ride. It's archaic to what's out there now. It's like night and day.