The 24V ones I got from solar sales and manufactured in Montana work great!!!, I like the 5000K type, however most experts say that the 3500K give the best CRI. I like the blueish ambience. They have worked great, no failers (exept for my ability to drop them or try and screw them in via holding the bulb) even in the cold outdoor shed. So as for the electronics man-hours-factored in china, the bergy seems ok but the crap toys are optimized for cheapness, it makes me what to puuuuk, blaa!, blaaa!, dollars in the toylet.