MS are a big deal to me. Locally at 65deg North, we get about 4.5 hrs of dusk in mid winter. It's often a nite ride at 3PM or no ride. After getting two sets of NiteRider dual400 lights I found I needed more batteries then learned they were $140 each. Wow! I returned both sets of lights. They were already more than I could afford and I could not afford to buy more batteries. I was about to forget riding at night or look for a cheaper Halogen solution when I came across the MS lights. I now have three sets of lights for well under the price of two sets of the Nite Rider. I also can turn on each light independently, and each MS is as bright as the set of two lights of the NR system. If one light goes bad I have two more for backup. If I were wealthy (er) I'd buy U.S. made and be happy to get a better made product but it looks to me like the Seca700 is about the closest thing out there to the MS in terms of performance and those are something like $400 each. To me that's crazy for any "regular joe" that has a limited income.