I bought this as a facilities manager for a mid-sized hotel chain, and it's genuinely useful. The chapter on choosing accessories helped me standardize our pad and brush inventory across different machine brands, which has simplified our ordering. My only gripe is that I wish it included a few more specific model numbers for compatibility. Overall, it's far better than sifting through dozens of manufacturer PDFs.

Finally, a handbook that treats this subject with actual depth. The section on maintenance alone saved me from replacing a set of brushes I thought were dead, and the troubleshooting guide for loss of suction is worth the price alone. I also appreciated the neutral tone, no hype, just facts. As someone running a small restoration business, I've already recommended this to two colleagues. Essential reference.