I have taken dozens of people out for test drives in UFOs and to the last person, everyone was impressed. It's an awesome rear engine, gasoline powered machine.
Over heating problems were not a characteristic of the fundamental design however they did exist as a result of a component failure. That component has since been upgraded and is currently installed in all UFO chassis resolving the problem.
I would not hesitate to but an Adventurer LE if I had the opportunity to do so. Have the VIN# checked to see if the component was upgraded. It will be in the repair history since it was done under warranty as a TSB.