I have a selection of Cateye lights to switch between my bikes (and extra mounts so i don’t have to faff around changing those.
Although i like the look of the Smarts, i had some a while back for commuting and they all died in wet weather so it’s not a brand i’d consider now (2 of 5 reviews on CRC for the 1W ones had their’s die in the rain).
I guess it’s each to their own as some have had problems with Cateye but i am yet to have one fail on me in 10 years of use. I also have a light fetish and have around 15 rear lights of varying types in the garage. LD600’s, LD610’s TL LD1100 and the latest Cateye Rapid 3 which seems very good. And a Few Backupz which always come in handy. I tend to run 2 0r 3 lights with a mix of flashing and constant.