The “Which method is better?” trap is a game some carpet cleaners play to lure you into paying for a gimmick.
Consider this: If I had just invented the world’s best carpet cleaning machine, I wouldn’t sell it to only one cleaner in each city, I would sell it to every carpet cleaner in the world. That way I would make the most money, and do the most good. So, when someone tells me that they have an “exclusive” method, I become suspicious, because I feel that if the method were so good that everybody would want it, it would be marketed to everybody. If nobody else has an “exclusive” cleaning method, it is probably because nobody else wants it.
Every cleaning method has strengths and weaknesses. I can use many cleaning methods to get the best results depending on your situation. I feel that truck mounted hot water extraction is the best choice, but don’t worry about that. Together we will choose the method that will work best for your needs.