I've always loved Meguiars products and I am quickly becoming accustomed to using there products exclusively throughout the automotive field.  I used this product during the final colorsanding phases of a replacement fender job that I did on my own vehicle and absoloutely loved the results.  Let it be known that you should still follow this up with M205 which is more of a final finishing polish that will take out anything this product leaves behind (which is minimal when done correctly).  I give this product an excellent rating strictly because prior to using this product I used Turtle Wax brand polishing compound which was considerably more abrasive and left very hard to polish out swirls after its usage on a hood job.  I finished the hood seperately and just wound up buffing the heck out of it with my buffer and Meguiars ultimate polishing compound which is also a good product but a little too fine in my opinion to take out wet sanding marks considerably.  This product does the job quickly, cleanly, and probably most importantly allows for the least amount of time/work that you must do yourself.  As with any job, especially in high in/out environments like a shop you will definitely want to make the most out of the time you have and this would be the product for you.  Never again will I even consider turtle wax polishing compound in the final stages of color sanding.  It's not worth the risk to have to reset which will be even more labor intensive, time consuming, and probably most importantly a much bigger hit in the wallet.  For the average weekend warrior/beginner this is a great way to save yourself from making mistakes.  Tips:  I use this with the Meguiars 7000 ultra cutting foam (reddish) pad.  I follow it up with the Meguiars 8000 (yellowish) foam pad and the meguiars m205.  As with any body work I do I do a gentle had buff follow up with the 205 as well, (especially important for black cars).  Results are outstanding as long as you have a little patience and TLC you won't go wrong.  Keep your buffer steady, level and slow to moderate speed... You don't want the thing sanding, you want it buffing!