I compete with a franchise that uses aerotechs. I tell potential customers the truth which is their machine is a stronger machine than my butler. I then ask if their place is 10 stories off the ground or if the van has to be parked far away. If the answer is no, I proceed to explain that water can only get so hot and the bells and whistles of their machine don't compare to the intelligent humans I have running my equipment. As stated earlier, I make sure the client is aware that it is overkill and a quality technician is much more important than a quality machine. For a quality o/o running one him or herself, my best defense would be lower price due to lower costs.