Looking at ordering new ultralight w/c

I'm not sure if I'm posting this in the correct forum, but here goes. I have a appt next week at the Patricia Neal Rehab Center in Knoxville, TN for a seating evaluation for a new wheelchair. With he pain/discomfort that has been nearly constant for the past 9 months in my left elbow (Ortho Dr says its calcification buildup in the inner and outer joint), I need the lightest Ultralight Rigid w/c I can get since I use my left arm to lift the chair in and out of my Toyota Tacoma. I'm looking at possibly the TiLite ZRA Series 2, or the Quickie  7RS. Anyone here with any first hand experience with these chairs. My current and previous 2 chairs was the Action A4. Thanks, Carl