New Review after about 3/4 year.ALL of the lamps that were installed have developed flickers or have just gone out. The vendor readily replaced the first 2-3 that stared flickering within 2 weeks. By now the rest have started flickering and one or two are completely dark.They seem fine if they are not on full-time. ones in the parking/license lights are the first to fail, then the overhead dome lights. the best ones remaining are in the doors, only on when that door is open. The dome lights lasted until one day I had the doors open for an hour or so while cleaning, then a couple of those started flickering.I haven't contacted the vendor again. I don't remember what the warranty is. No sense in going through the trouble to get more of these, just to have them fail.I suspect they are not running an adequate resistor, if any internally; instead pushing for maximum output, which raises temps and lowers lifespan.oh well. May just go back to incandescent.1. light quality: typical slight-blue LED output. They are brighter than incandescent in a non-focused housing like a dome light, and acceptable for clear marker lights, license lights, etc.. very happy with these in interior and puddle lights and dome lights. They throw a lot of flooded light. In a focused lens they are about the same as a filament bulb, just not as much pinpoint focus.2. bulb quality: it's a solid bulb that is a little tight to install, but even in really tight sockets they did not break on me. they run a little warm in always-on use, so i'm not sure what to expect from them long-term. Of the 12 I have installed, 2 have had one element (each bulb has five) start to flicker. the flickering would stop if I pressed on it. The vendor has quickly replaced the bulbs and has said they'll provide 90 day warranty. This works for me.3. price. $10 for 10 LED bulbs is reasonable. Keep in mind, at this price, while some may have given me trouble, the cost is no more than incandescent.4. I'm giving 5 stars because the vendor and the low price makes up for the problems I've seen so far. It's a neat product and affordable to experiment with.EDIT - docking one star to 4. Afte a few months, half of these have lost several LED elements.