Got some Profile Design, Air Stryke clip-ons. I have mixed feeling about them.
First, they didn't take long to get used to the riding position and I did notice an advantage when going into a stiff wind.
BUT, I hate the way they look - they make the front end of my bike feel cluttered and clunky. I think I'll take them off and put them on only for time trials. Oh, and the flip-up pads do rattle on rough spots in the road (can't say I wasn't warned . . .).