I have both, though my Cron Asph is the previous version with clip-on rather than screw-on hood.
Much prefer the FLE over the Cron.
But... if F2 is fast enough for your max. aperture, just buy a Voigtlander Ultron 35/2 and save yourself a heap of cash. Its optically every bit as good as a Cron Asph, and actually a better lens if you don't like the Cron Asph's pincushion distortion (the Ultron has very minor barrel distortion like the FLE).