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It looks like the 27mm pancake lens is on special at the moment and I was hoping for some feedback...
I used the XF 27mm on my X-E1 when I had one. I found it to be an excellent lens - very sharp, as contrasty as the other Fuji's, nice color rendition. If you like and have a use for the focal length, and don't need a faster max aperture, it's a nice and super-compact lens.
As far as the 27mm not getting much attention here, I think that's mostly because so many of the active posters here use the faster 23mm and 35mm lenses (or else the 35 and have an X100/X100s). For many Fuji users with those, the 27 becomes somewhat redundant.