I got the PMF Swivel stair tool. Much easier on my back but I am not a huge fan of how it cleans (or doesnt clean) the bull nose, have to wrestle it too much. I'd rather just get the regular one without a swivel. Just my 2 cents.
I would rather have that feature than the pmf swivel feature. It swiveled too easily, it was nothing but a pain in the assThat monstrosity from westpak was at ice, it wouldn't swivel without placing a hand on each side of the swivel and forcing it