And you own a TM right? If OP is all you got then how would you know other then talking/using Dobs machine.
in some situations I find it is the right combination of cleaning chemicals and agiation
OP is an apperance method and really no more then that.
Does it look really good sometimes? It sure does.
Can it go places a TM can't? Yup
Can you do a hot water rinse after 90% of your OP jobs and have dirty water? yes you will, can't say that if the TM process is done correctly
I think you are listening to that dirt grinding Craig guy from the Floor Care BB to much
It is one of those 10% VS 90% things, you know, 10% of the fisherman catch 90% of the fish
I bet if you bought a decent TM, you would end up using it more then the OP method, or a combination of the 2 methods
P.S., remember to count the pad replacement and the water/time you spend washing the pads as you figure out your total costs doing a job