The 75 lux was my first option for this FL but I ended up with a new cron instead. I searched the internet and dealers for almost a year before I gave up on the lux, I wanted a German made 6 bit lux (which proved to be elusive and more costly). I even considered purchasing a Canadian made w/o the coding and then just sending it in for CLA and coding. I like the 75 cron a lot but I always wonder if I should have held out for the lux. I still passively search for the lux and i've noticed that the price has come down recently and it's closer in cost to a new cron (whereas before the non 6 bit German made version was much higher in cost than a new cron).
I'm starting to prefer the 75 FL to the 50, but wide open my 75 cron can't match up with my 50 lux (though that's not a really fair comparison).