I have been the proud owner of the Redman Chief 107 – ZRx Standing Power Wheelchair for over 1 1/2 years now and am very pleased with the chair and its capabilities. I previously owned a Vertran Standing power chair but it had two big drawbacks: One, it had one Velcro chest strap that always left you leaning forward. And, two, it was front wheel drive and very cumbersome to drive in the house (always running into walls or furniture when you turned). It was built in such a way that you could not install a pin for an E Z Lock, so you could not drive with that chair. I also tried the Levo Combi C3, but the chair lacked the stability when traveling in and out of the house while standing and the knee bolster was a weak point. The Redman Chief 107 – ZRx Standing Power Wheelchair is very secure when traveling in the standing position, as they have the battery pack travel backwards as a counterbalance as you stand. The chair is mid-wheel drive, so it responds quickly for maneuveri ...