Yep, Nichia LEDs are excellent. But I prefer Chinese manufacturers for LEDs - they're much easier to deal with and quality is good and consistent and availability is great. I recently had some LED emitters custom made in China (low quantity) and the light properties are exactly to spec. I wanted a combination of cri and color temp that wasn't available off the shelf in that form factor. At the quantities I wanted, nobody outside China would even talk to me, but I had several options to choose from in China and the first one I talked to delivered, exactly to spec, exactly on time.