Dimmer performance was terrible -- See the first part of the 3-part video (only allowed to upload one video per review so I combined my three). They flicker like crazy when all the bulbs on the dimmer are changed to these LEDs. Once at least one of the bulbs is incandescent, things tend to calm down SLIGHTLY. The best performance being when I put all of the incandescents back in and remove the LEDs. The bulbs I got did come with a 10-year warranty if you register your bulbs at the URL printed on the package (I assume if you get frustration free packaging you may never even see the warranty language printed anywhere on the packaging). If you do NOT register at that URL, then the warranty is 5 years. Registering is easy and I did so. They are very bright in terms of output -- (part 3 of the video). So that can be a good or bad thing, depending on what you're shooting for. I don't really get the warm glow feeling from these lights. I'm not an expert by any stretch of the...