plasticmind

I don't think there's anything wrong with the "hybrid" approach. Obviously, some things take a lot longer to do in CSS/XHTML, so Photoshop is the best tool to use when brainstorming or comping for a client. But at some point it can become counterproductive trying to replicate all browser behavior in Photoshop, so I just "run with it" and deal with the detail in CSS/XHTML.