Power steering seems kind of wimpy to me for a wheeler, but I suppose it depends on one's upper body strength and what they are riding over. I do remember nearly dislocating my thumbs on my old K-5 Blazer without power steering when I hit a tree stump and the stump did the steering. Sweetness and I are in a balance class here and one of the exercises was to push sideways against each others outstretched arms while facing one another. I was amazed at how little upper body strength she had. If we used our wheelers more, I'd probably look at it too.
