Not sure which ones you guys are referring to, but the Yuji 5 mm HCRI LED's are awesome for lights that use them. I have been using a warm version in a Gerber IU since late last year, and love it. Mule-like beam, almost no center bias and absolutely no artifacts or tint variation across the beam. I think McGizmo is using the 5600K one in the Sapphire HCRI.
Oh, and when you are reading over on your speed, you should get bonus miles on the ODO, if they read from the same source. Was going to mention things changing with aftermarket tire sizes, but you have already used that to your advantage! Not to poke the OCD bear, but if they don't read from the same source, you may now be showing less than your actual miles on the ODO. (Hogo gets out surveyor's transit to mark out calibrated mileage test track in the desert)