Those bars with the cut angles are based on the classic "Cinelli 65 Criterium" handle bar. The idea was the more rounded corners allowed a person to sprint in the drops aggressively with out banging your wrists and arms..

I had a set on my Klein Q-Pro and loved the feel and look of them.




Modolo makes avery nice and stiff bar. I had a Speedy Anatomic before and it was stiff for a ~300g bar.