Hi Bruce
I think you're asking the wrong questions. What you should be asking first is:
What is the best and most cost effective system for these type of carpets in these locations?
By restricting yourself to a T/M option could be too limiting.
By the way, as you are probably aware, a T/M will remove more soil more quickly than any other cleaning system. (I gather that there's a major franchise who would disagree with my opinion, but that's another story. Ask Lee G.) However, especially on low profile loop carpet/tiles, a T/M may not always give the cleanest appearance. From personal experience just over a month ago, a multi £Billion prospect I demo'd for stipulated that they would not , under any circumstances, allow HWE of any type in their premises. They wanted a dry system. We convinced them that a low moisture system was the most appropriate and the results exceeded their expectations, and, most importantly, did so safely. (Many computers, suspended steel floor and loose laid carpet tiles).
Safe and happy cleaning:)
Ken