Tried a few LED "50W replacements" from other sources. Some were nowhere near 50W. Some were bright enough but horrible colour, one was flickery. Tried one of these and promptly bought another 30 - which should tell you that I considered these the best ones on the market. SMD bulbs give a wide, even spread of light - much more so than clusters, single LEDs or halogens - which I think makes them perfect for downlighting. The warm white isn't quite the same colour as halogen, but it isn't too white or clinical - just slightly different. Several visitors have asked what model they are and where they can buy them. Not the cheapest bulbs out there, but definitely the best I've tried.