I used to swear by 3M garnet paper, but it seems like the company is cheaping out and using thinner paper than before. I’ve been trying different kinds of sandpaper now. I like the blue zirconia for my random orbit sander, and I have ordered some of the mesh type sandpaper as well. I haven’t used it much yet, so I can’t really comment on it. I have heard good things about it though.
Dave.