In a bokeh contest, I thought, the "Bokina" (the old manual focus Tokina AT-X Macro 90mm f/2.5) must be represented. I suppose I will not be the only one, but just in case... The shot actually comes from a comparison between the Tokina and the smc Pentax-A Macro 100mm f/2.8, and the difference in bokeh and sharpness was not very evident. Nevertheless, IMO, the Tokina did very fine in both respects.