The design of the roller doesn't work for me. It fails in two ways. First, the way it mounts is weak. I've replaced it once and it's currently surviving on electrical tape.
Secondly, I often want to push it forward and then pull back and mow at a different angle to cover small, oddly shape areas. When I do this, it often tilts up on the roller as I pull back.
I'm attracted to the Scotts design because the "training wheels" would seem to help it roll backwards well. Can any owner comment on this? Actually, if lot's of owners could, that would be good, because at least with my Husqvarna the height of the operator seems to matter. It's a problem for me (5'10"), but it's a much bigger problem for my son (6'3").