I like the Zipps but I rarely ride on the tops and spend most of my time in the drops. If you spend a lot of time on the tops it's just not comfortable. They look awesome and are stiff enough for me. I had ITM K-Swords that were even better ergonomically but weren't as pretty and a little too flexy.
Thinking about trying some of the new pads. I love the yellow in the dry, but in the wet ... they aren't great.