I can’t attest to the energy efficiency or the longevity (only had for a couple weeks), but so far so good. All the bulbs were the same color and they all dimmed. Did exactly what I wanted and purchased them for. The only different between these and the Philips brand counterpart is the Philips dim to an even warmer shade. This brand did not. You cannot tell a difference when they are on full power. I could not justify the price difference in keeping the Philips over this brand. For how many I needed to purchase, I saved almost around $70 purchasing these over the Philips. I wish I could find the picture of took of the two brands side by side, but I am having trouble locating them. If I have any issues I will update this review. Oh these bulbs are a few centimeters smaller in size (the glass part, not the socket) over the Philips. Extremely hard to tell unless they are directly size by side.
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