I used to use um in 2003 also thier promite and traffic lane .
Since then I have tried chemspec, solutions , hydra master,prochem and odd tubs of odds and sods .
And my findings are they are all excellent if used in the correct system . Ie pre vac and edges , pre treat, Pe spray , agitate and dwell then extract with good heat , then pad if needed .
We all just go round in circles .
I use at the moment mpower and it works well for me and if it dosent I use something else which is rare as i know mpowers limatations so opt for a different solution .
85% is operater experiance.
At the moment I have f90 ,mpower, shockwave ,and dynamall never been stuck yet