We have started to put SilverStars in all our ambulances. Crews have reported much better night visibility. We tried the Ultras but didn't notice a terribly significant difference. They are more expensive and we see a realization in any increased life the packaging refers to (which is what I really wanted). Any of the SilverStars (from our experience) have a very short lifespan. I don't really care as much about this though because the safety of our crews is much more important than the increased frequency of replacement and additional cost. I am still looking into other alternatives though. It'* interesting because the Ultras were around for a short time, but now I can't seem to find many places around here that even stock them anymore.
StingRay Bike w/cards in the spokes, Weeeeeee!