Have you tried them (microfiber pads)? They cut fast, even on a Porter Cable. Meguires only discontinued their 3 inch pads, not the 5 and 6 inch pads. Try their microfiber system and I guarantee you will find microfiber pads to be one of your new favorites. Try a cutting pad with Meg`s D300 to compound trashed paint. Give a Meg`s finishing microfiber pads a try with CarPro Essence on paint that is not perfect, where you need to remove/fill a few scratches. Microfiber pads were made to make the job get done faster. They are best for production detailing, but the hobbiest Detailer can get a lot of mileage out of a microfiber pad too. Oh yeah, they last longer than most foam pads too making them economical. That`s my take and attraction.