OK - finally got my Q2s through from Cutter, and as i have these plus some Seoul P4 Ubins now, I wanted to ask - has anyone tried a comparison of these two? I know people were saying the Seouls were miles brighter but IIRC that was when we were on P3/P4 Crees. Whichever 'wins' wil be going into a triple unit run at 420Ma so I'd like to extract maximum light from it. I've got both fraen and carclo optics for both which I've been happy with so far... Also, when run at 420Ma and also 1A, do they have similar Vfs as that could be a consideration to (comaring between the two at a)420Ma and b) 1A)?