I have a 2-watt Xenon-strobe yellow blinker on my winter bike. It is amazingly bright compared to my PB SuperFlash. I sometimes run both together so there is a backup light running in case my lead-acid battery runs over its 40 minute charge.
I have this strobe on this bike for a number of years. I did burn out one bulb... actually the wire lead snapped and couldn't be replaced.