the Challenger is a little faster for me on resi jobs, in terms of bringing it in and out of the home.
the 2-3 times i have used it on commercial, i prefer the Orbot over Challenger in that arena.
but i MUCH prefer my Cimex over the Orbot for 99% of my commercial jobs. if i do a greasy job, i will prescrub with the Cimex, then extract with the Orbot. those are the circumstances where i use the Orbot on commercial accounts.
My wife & I were wondering the same thing,not in the business yet. We ran the Hos orbot & it was easy to control but seemed a bit clumsy. Is the Challenger as easy to control as the Hos orbot & is it kind of like an Oreck orbiter only on a bigger scale?
The standard size (15") Challenger is very easy to control on all but the lowest pile, commercial glue-down carpeting. For this type of job, I would recommend a machine with wheels which are on the floor while the work is being performed.
The Challenger Titan (17") is available with wheels either up or down. The same size Orbitec Defender comes with wheels on the floor. I cannot comment on the Orbot, as I do not own one.