I have owned the 35/1.7, the 28/1.9, the 25, and 15. All were great lenses. The 28 in particular was one of the best lenses I've ever had, in terms of definite personality. The 35 lacked nothing at all, and surely beat the pants off the old 35/1.5 Canon, and RF Summilux I had previously owned (which were also a couple of decades older), as well as my current 35/2 Nikkor (which is more modern). The 25 was forgettable, and the first one I got rid of.
My impression from those was that their slow lenses are fine enough, but the fast ones are better in terms of having an indefinable something, and probably the lens you mention would not be my first choice. The 35/1.4 looks awfully pretty in the pictures, and quite compact. You already spend a bunch of money--is now the moment to go cheap? :-)
Last edited by mdarnton; 01-07-2012 at 02:02 PM. Click to view previous post history.