I love the function of my 300r; if I was in the market for a new tail light, I would certainly consider this. I like the fact that the new light is smaller, lighter, and brighter. The next couple of years are going to be interesting as it pertains to lighting; LED's are getting brighter, and batteries are getting smaller. Remember when we had to keep a bottle battery in our waterbottle cage, or carry a heavy battery with a cord in a jersey pocket? Those days are long gone, and I for one am loving that.