They are all very close. Ferrari vs Lamborghini. Each company has different models or versions which all have slight variations as far as efficiency goes. The Cree 3590 is cree's top cob. The 3590 is beat by the citizen 1818 and very close to the citizen 1812. I haven't messed with vero but I do think that's also a very close contender. In the end most of these chips are around the 50% mark which is more than twice the light of epistar and brigelux brand leds.