Terry, ive tried most of them over the years, some you stick with others you change. At this moment in time I use about 20 different chems, for different situations and methods,along with m/s the above 2 I prob use most at the moment. But its like everything else, one chemical works great for one cleaner and not for another, remember that all the main suppliers chemicals are all good and work,its how we use them and suit them to our own style of cleaning.