I had to stop using all my CS3 gallery-sharpening settings when I switched to CS6, too. They were too sharp and grainy, and I couldn't get them to look right when I tried to tweak them. I have some Annie Manning/Paint the Moon photo editing actions that include a web sharpening action, and that's the way I've been saving for web since I switched to CS6. The sharpening happens on its own layer with that action, so I can just adjust the opacity of the layer to compensate for the sharpening effect being stronger. So I save a 12x12 jpg at full quality, resize to 700 x 700, run the sharpening action and adjust, then use save as and manually adjust the compression level to keep it small enough for the gallery.