I like Tektros, mainly because of the long, wide, flat top. Very comfy place to rest the hands, and a nice smooth transition to the "ramps" on the handlebar. Very much like 10sp Campy Ergos, another fave of mine. Shimanos have never appealed to me - too much like pre-aero Campys: narrow, short body, abrupt transition from handlebar, and too small around for my long fingers.

FWIW, Cane Creek levers are also made by Tektro.

SP
Bend, OR