i had the 105 micro VR, and i could say its probably one of the best nikon lenses ever made, in terms of contrast & corner to centre resolutions, you could even do a 100% crop without applying USM, and people wouldnt even realize its cropped. sometimes i do regret selling it..
and your other question abt voiglander 58mm, i had the luxury of having one for a couple of days on loan from a friend, its sharp wide open, centre and corner performance is good, but there's just this.. voiglander hue that i dont really like.. its like having a 5% warm filter slapped onto your image in photoshop or something..
cz's still ahead in terms of subject contrast rendition, that the subject is often contrastier than the background bokeh, helping it stand out. the voig's a little flatter to that aspect