I use & like the planet bike superflash for the rear. The switch on the Superfash can be difficult at first. But after some time it has become a non issue for me. The push button switch has been vey weather proof an issue that has come up in the past on other lights

Cygolites Expelion 400 up front. During the day it stays on the bars in flash mode at night its on my helmet on the medium setting. I will be buying another one. For light out put & size, ease of mounting & removal I have found it to be one the best for money spent! A fantastic light for commuting around town & for bike paths with no light.