I have used this light since mid-summer and I have not had any issues with it.
I agree w/jmlenz that the flashing stop feature is for safety. I had a crotch rocket guy ask me where I got it during a stop light...I would recommend it to anyone.
Really easy to put it, especially if you have already done the tail chop - then you already know how things are put together on that end of the bike.
Just my 2cents
2011 Black Monster 796
Evotech tail tidy
MotoDynamic Smoke Integrated Tail/Turn light
Rest all stock