i just started using ultimate master again this week, i've been using high heat, that i like then i have been using solutions crystal rinse, also good, but out of them all i do like the results of UM, the visible results somehow seem better, nice smell too, the reason i stopped using it was because it tends to fir up my hoses at the end of the female quick releases, i started having the same problem with high heat since the name was rebranded to Optimal rinse, could be coincidence, but when using solution crystal rinse, the connects are as clear as a bell, so my plan is UM until it firs, then a couple of day with crystal rinse to clear the pipes