Review on Pack Of 5 Ascher GU10 LED Light Bulbs, Non-Dimmable, 4W (50W Halogen Bulbs Equivalent), Warm White (2700K), 400 Lumens, 120° Beam Angle, Ideal For Recessed Track Lighting With GU10 Base by Kevin Hernandez

TLDR: The price is right, but they don't even last as long as an incandescent bulb. You're better off spending more and getting something that will last.We got a new light fixture for our bathroom and it required 5 GU10 bulbs. I'd never heard of a GU10 bulb before. So, I naturally searched on Revain, found this 5-pack that was a cheap price, bright, and the "color" light that I wanted, so I excitedly bought them thinking it was such serendipity.They worked great at first, but after about two months, I noticed that one of the bulbs would "flash" on and off, intermittently - on for a few minutes, then off for a couple of minutes, then off again. I tried removing it and putting it back in, swapping the socket that bulb was in with another bulb, etc., but it still kept "flashing." I tried to live with it, but over time it was off more than it was on. A few months later, and it was off all of the time, which I thought was great, because off was less annoying than then flashing; the room was a little dim, but I still had 4 good bulbs. Then, a few months after that, another bulb began to flash.I thought perhaps I just got a pack with some poorly manufactured bulbs - an occasional manufacturing defect can happen, right? So I just re-ordered another pack of these exact bulbs thinking it had been months later, surely the bad stock has been worked out of inventory.Every month or so, another bulb would begin to "flash." And when I used up all 5 of the replacement bulbs, and another bulb began to flash, I decided to pay twice as much and get some from my local hardware store. It has been 2 years since I bought the original bulbs, and of the original 5 bulbs, plus replacement 5 bulbs, I only have one working bulb - all the rest are the replacement from the hardware store. And when this last bulb begins to flash, I will replace it with a hardware store brand too, and be done with these.Don't waste your time.