Rather than hit the sharpening at 60, better off doing it 6 times at 10 (Or rather 5 times at 10 to get the same force). The difference is visible and better. Likewise USM, 3 x 10 is better than 30. I use High Pass filter at about 70% opacity then an USM – 2 at 5.
+60 is sharpening on the RAW file where there’s no option to adjust the radius. When I do use USM, the radius I use is dictated by the size of the image. The larger the image, the larger the radius, so for an image 1024 wide I use 0.3. For an image straight out of my 350D or 30D I might use 0.8 or 0.9. In all honesty my sharpening technique works perfectly (for me and seemingly for JP) and it takes me literally seconds to do. That being the case, I can’t really be bothered doing loads of passes of USM when I can do one stage of sharpening in RAW, apply one more tiny bit of sharpening after I’ve re-sized and have a pretty much perfect image, with the possible exception of a little subtle selective sharpening should it be required (which only maybe 1 in every 25 photos actually does).
If it ain’t broke, don’t fix it. 🙂
Paul