So, I caught the fever and bought a bottle. Tried it on my wife's car, and thought her car looked as good as it ever had while it sat in the garage. Once she drove it, the shine seemed to be reduced quite quickly. Weather wasn't bad, no rain or snow, but by the time we got to our destination, I just didn't think it looked as glossy as it did in our garage. I figure it was the lights. Her care is silver, and the LSP on the car is 6 week out McKee's 37 High Def Paint Sealant.
I tried it on my black car the next week. again, car looked great sitting in the garage. Slickness was pretty stellar, too. Got to work the next morning, and again, just didn't maintain the shine. Two days later, the slickness seemed to have returned to what it had been before BM. LSP for this car is McKee's 37 Paint Coating. But I've persisted, and reapplied BM three times now after rinseless washes with N-914. Each time, the shine seems to impress me less and less. Could that be psychological? Sure. But I just don't find myself as impressed as others have been.
I'm out now. Given the low cost, I can't really say I'm disappointed with Bead Maker, but I can't see myself reordering it.