I notice that the Megs Microfiber Cutting Discs are used by many on this forum. I plan to order a couple of packs of five inch and three inch discs for my first gen 7424. Should I order the Megs Correction Compound too? I plan to use these discs rarely on my two trucks and Harleys...only for marring/minor scratches that a foam pad cannot handle easily and for touching up repaint sanding/compounding/polishing that a body shop might not get quite right. At this time I am getting along just fine using Megs Ultimate Compound followed by the Ulitimate Polish. Will the Ultimate Compound work satisfactorily with the discs?