What are some good white superflux LEDs?

I made some plug-and-play bulbs with Oznium 4-chip white superflux LEDs and they're great at first (bright, nice color) but they just don't last. I even ran them conservatively but that didn't help. They sent me some replacements for the ones that went bad but now they won't so I'm looking for a new source. Do you know of any quality ones that won't go bad in a month?

Edit: I just spotted some from Everlight, are these reliable?









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