Well I've been raving about 28/2.0 as my favorite length at the moment, so yesterday I went to go try out the Voigtlander Ultron in a store. It was beautiful to hold and wield, but at the end of the day, I couldn't tell the difference in sharpness between it at my antique $75 FDn 28/2. The colour was probably a bit better (hard to tell in a store) but that was it. Then I went to another store and found a nice Thorium concave FD 35/2 sitting right next to a FDn 35/2. And here there was not one bit of difference between the two. In fact I thought if anything the FDn was sharper (and also smaller and lighter - the concave 35/2 was almost as heavy as my 55/1.2!), and also $80 cheaper. It's so hard to tell objectively till you try, and then the grass isn't always greener. It looks like it's going to be a straight fight between Zeiss 24 and 32 lenses for me to see any improvement from what I have now, and waaah that's a lota money!