Here's a comparison of the 2006 and 2007 version of the Shelastic Chamois:

-- 2006 Shelastic Chamois

-- 2007 Shelastic Chamois

From the picture I'm guessing that the 2007 is a bit more comfy in the front, but I haven't tried it yet, so...

On the other hand, Shebeest doesn't seem to make dramatic changes on their chamois from year to year, just little improvements here and there, so I'm guessing it won't be that much different.

Cari