I have a lot of Porter Cable tools and have reccomended Porter Cable to a lot of people. I have their routers, circular saws (older versions), biscuit joiner, nail guns and a lot more. I bought this sander a few months after they came out. It is  the worst tool ever made. They need a better design for holding the profiles. I have used it 3 times and it sanded good as long as the profile didn't fall out. I have decided to use the profiles without the vibrator. I hope someone will come up with a manual type profile sander that you can grasp easier than the little profiles. I wish I would have given it back to the manufacturer, but I have had it too long. I would not reccomend this to anyone unless you want to use the profiles manually.