Originally Posted by kitten_sandwich
well, i guess depending on which qualities you are measuring, but if you are talking about adjustability, then risers ftw, sorry dude.
surly did a nice article on it, get learned.
http://www.surlybikes.com/spew2.html
There is ****ty adjustably. As surly itself admits you change every aspect of the bar together when you rotate it. Sweep and rise can be adjusted in the same way with a flat bar but you don't have to move the bar back and forth to do so.