I also use zymol. I've found both product lines are great. They have some "philosophical" differences but everything seems to work well. Zymol has been suporting BMW CCA concours ever since they started up, & the results have always been wonderful. The orbital from Griots has some modifications from the normal configuration; the info may be on their web site. If not, call them & talk aobut it. (Zymol's fruit & tropical oils smell really great & help contribute to the fun of waxing.) Any opinions on their products? Have brought my cars to detail shops for years and tired of the cost and want to start to do it myself. I am certain i have found their Porter Cable Polisher for much less than advertised on their site...Does anyone have the exact model number?