Now that CS5 has been out for a while, I am curious about whether folks using it find significant advantages over CS3. I do black and white and do not do extensive retouching beyond spotting. I use curves and selective sharpening and masking for darkroom style control. My color is digital and I use Lightroom for that, so I do not need the upgraded ARC and other color features. I do not do video. Given that Ctein had recently panned CS5 on The Online Photographer, I am wondering if there is any reason to spend the $200/300 on an upgrade.