A little red flag:
"I have looked at all kinds of TM machines and the different wands and rotary cleaners I think I have my mind made up on which ones I am getting"
If you don't have experience, how do you have your eye on a particular piece of equipment?
Here is one idea, it's just an idea, you can let blow on by if ya want.
How about look around you area for an experienced cleaner, maybe even outside your area as long as it's not too far, and hire him to clean your jobs that you can line up this winter, lots of guys could use a little extra work in the winter, and for a split of the money it could be good for everyone, just make sure he understands you are subcontracting him, I'm sure the right fellow will be more than willing to share some experience.
I'd be willing to bet after a dozen jobs you'll have a better feel for the equipment, I heard Restaurant, so that means some heat would be one consideration, as well as a Truck mounted unit.