The brighter the light the better. With the number of random lights all around at night I want my lights to stand out almost as much as car headlights because it seems thats all that cars look out for. Those turtle lights seem like a waste of time to me. Do you have to throw them out when they run out of batteries?

I only have one set of lights but if I want to ride a different bike at night I take the rear light off and put it on my belt and then unclip the cam buckle on the front light and switch the whole thing over. It usually takes about 5-10 seconds.