Every system has it's benefits, why limit yourself to just one. Although this is just a sales pitch, there are inconsistences in the wording. For instance he states safe cleaning without the use of solvents, but according to the Host web site, the sponges contain a mixture of water, detergent and solvents etc. It would need this to be able to deal with the different types of soiling. I personally do not like the negative type selling techniques but rather concentrate on the positive benefits of your cleaning system.