Akira, I have been using in recent months the 135DC at its widest setting f/2.0 and have not noticed swirly bokeh or cat's eyes.
For more than 10 years I have been using the 85/1.4 AF-D and have not noticed these characteristics either.
While I do agree with you and Illka that contrast and sharpness do improve when a lens is stopped down a bit, I simply don't agree that swirly bokeh or cat's eyes are common features of all fast lenses at the widest settings.
And, let me repeat, I love swirly bokeh and irregularities of lenses like the Zenit 85/1.5 or the Heligon 100/1.6. I have posted hundreds of such photos here. But their rendering of irregularities is so much more appealing to me.
In the beginning I was joking that will NOT buy the 105/1.4, now I definitely won't, thanks to Erik's examples and other examples I have seen.
It doesn't match my needs, but it doesn't mean that it doesn't match the needs of others
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And again, I am not stating that it is a bad lens, I am just saying that it's not for me, because I am the guy that makes all those blurry photos
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