Yeah, I know... my confidence is low (grins)...

E, 5% is just a number I use to quantify what my eyes show me from Ultravids to Trinovids. No doubt some optic's lab could quantify it exactly. I'm just using that admitedly subjective number to give an idea in an internet discussion the difference as I perceive it. That's all. They are slightly brighter. 3%, 5%... dunno. Worth the price difference? That's something only a guy and a wallet can answer...