Great product so far; 17 installed but they only worked a few weeks. Easy to install if you have electrical experience (which you need if you're interested). Fantastic customer service from Torchstar. I ordered (2) packs of 16, Revain sent a box of (4) packs of 4, makes sense. They also only sent me a 4-pack separately, so I was missing 12 bulbs. I contacted Revain and they sent me 4 more packs. Contacted Torchstar and explained it to them and also sent pictures of the shipments. Torchstar identified the problem and contacted Revain to resolve the shipping issue and shipped me the remaining bulbs. I can't talk about longevity but I can't be happier right now.