For those prices I'd also want more transparency about where they purchase their Crees. Are they acquired by the Evergreen factory from sources in China? Wink, wink, nudge, nudge, "everyone in the supply chain says they're Cree... so we're not lying when we repeat what our partners tell us."I would ask what bin the LED's are.
I read through Eraserhead's posts here and I recall reading that he had a bad experience with the veracity of bin numbers and things from Chinese sources. Maybe it was someone else. But, A51's FAQ says they buy from Digikey and Mouser. I forget if he ships his chips to the factory for assembly, or buys cases and fans from China and assembles here. I wish he was a little clearer about this on his web page. He went into detail about it in some of his posts 2 years ago. But, that's a long time ago.