The Fuji I just redid had DC AC2600 levers originally:



I really didn't like the shape or feel of them (even after getting them reasonably clean). Then I found a set of Shimano BL-R400 levers at a local fixie shop:



I believe these are the Tiagra level levers. Built damned solid and I REALLY liked the feel compared to the DC levers. You can find them < $30 at Outside Outfitters.