We do just over 11,000 steps in a day. While that might not be excessively high the average person takes 2,500 steps in a day. I hope that helps.
While some of these boots may last longer than others one of the most important things is the fit. Some boots will fit your foot better than others. He doesn't like the magnums but they may be fine for you. My advice would be try them on where available and see for yourself.
As far as durability goes though my experience suggest that many of the other boots will last longer than Magnums.