[mathewsanders]

Personally i would suggest neither.

At it's heart, photoshop is a bitmap editor it's original purpose was for manipulating photos various tools have been added with new versions that make it more useful for web design.

Illustrator is a vector-based app for creating free-drawn illustrations. Again newer versions have added things like pixel snapping to make it okay for web design (but its better suited for logos, visualization etc).

My preference is Fireworks. It's got great exporting tools and I find it a lot faster than working in Photoshop (for web/mobile work).

Remember also that design involves a lot of iteration. If you're concerned with efficiency, please get comfortable expressing your ideas with pen and paper - it's the fastest option :)

[shuaib]

Thanks for recommending Fireworks. Seems like the right way to go.