I ordered one of these new XP's as I got a great deal on one through one of my suppliers and could use a spare buffer. I also didn't want to spend 50 dollars for an adapter for only use of Edge pads on my Flex as I already have the equipment to run 4" pads on a PC. I would have spend over a 100 dollars for the adaptors/pads but now I have a spare buffer instead. I will be doing a side by side comparison/write-up of it to my Flex.