After resisting for some time, my husband agreed that his life was being limited by his decreasing ability to walk distance without pain. So, the IQ-8000 was purchased and has filled the bill. Movie theaters, airport terminals, malls, ADA-rated parks; all had been closed to us and now are on the ticket again.
The only reason for 4 instead of 5 stars, the chair design would be improved with a lock mechanism when in the folded position. At 60+ lbs., it takes both of us to lift it. Trying to put the folded chair into the trunk or back seat is awkward when - unless you lift it just right, the chair will start to unfold as you are trying to move it into position.