I would like some help I can not make up my mind on a surface cleaner. It is either the whisper wash ultra clean 16" or the whisper wash classic. I will be using it with a Landa MHP 4.2 GPM 4000 psi hot water unit. I used the search tool here but do not see anyone using the ultra clean by whisper wash. I like the price on the ultra clean better :grin:. Thank you in advance for any advise.