Guys, I get what you're saying. I'm not skimping on my COMMUTER BIKE! I said it was for bikes "which see little night riding." In other words, bikes I use for daytime runs.... And don't underestimate the brightness of 21 leds. I can see QUITE WELL with them TYVM. And as for "you get what you pay for"... tell that to the folks who fork over $30 for lights that are about HALF as efficient as the ones I have at a $6 price. And IMO swapping lights is a recipe for them getting lost, dropped or forgotten.

Is there some REASON why I should spend big bucks for lights for a tandem that I ride with an autistic sister (so she can get exercise) which has NEVER even seen twilite? Sorry for being declasse but I'm an incurable fred

I can't WAIT until the spandex tuxedo is invented "Perfect for that soiree at Mrs 'Astorbuilt's' house."