Technotart - are you riding with streetlights or without? I think that makes a huge difference. Our Nathan vests with the entire LED strip can be seen a long distance off. It's nice to have a riding partner because you can critique each other's light/reflective efficacy.

We were riding in and out of lit areas -- reflective material for lit areas and LEDs for dark areas. We met others with similar vests and it made a huge difference in dark areas. The more of everything the better and who cares about the geek factor.