On: Clean Up Your Mess - A Guide to Visual Design for Everybody

Personally, I do find the design on the right cleaner. The problem I have is that the big black bar behind the two lumps the two together into one weird single thing. I think they would be easier to evaluate if presented more like this: http://i.imgur.com/KrRl6.gif.

Thanks - you're the second person to point that out, and it's something I intend to fix.