i have had a HAwk wheels down...dual speed for about 3 years..i actually really like it.....i believe they have 2 different wheels down....the MARLIN has more head weight.....Hawk has a wheels down, sprayer in the front, solution tank, looks good. I have been getting complaints useing orbital machines in old plywood sub floor buildings.
HAWK makes those with large wheels now...i ordered mine...and the SWIRLY is a wheels up...!!!!1Found it
It would probably solve the wood floor problem and OP's
It looks slow and the wheels are very small
You will have to carry it up stairways and I'm sure it weighs over 100 pounds
Bonnet Pro machine probably going to be $3500 - $4500
When it's finally ready
Have you considered Swirly ???
It doesn't have a sprayer
Just shower feed