I'm in the same boat. I used to use PS but found it slowed me down after my CSS got good enough and I love having the mockup be functional from the start. When

I'm in the same boat. I used to use PS but found it slowed me down after my CSS got good enough and I love having the mockup be functional from the start. When a site already has core styles, CSS and HTML seems sooo much easier because you can leverage existing classes etc. I will only use PS as a starting point for a completely new design where I have no existing styles to speed up the process. I never use PS for a new page on an existing site.