True, fit is important. To each its own, though. BTW, not to beat up the dead horse, the NXT lens is not 2% better, it's better to the extent that I am still using it during storm days, even though I have a dedicated hi-yellow Oakley goggle (and by most accounts that lens has one the two best storm lens tints, if not the best). If you care about numbers, the NXT acuity is 45 on the Abbe scale (regular glass is 44), and polycarbonate is 22 or something like that. So we are talking twice as clear (not 2%, 2 times), and trust me, yes, it IS noticeable. I am not dissing your purchase, just stating the facts. FWIIW, I am saving for the next year's Smith ChromaPop I/OXs (which should have NXT lenses in the I/OX frame). I would probably pay retail for that goggle, because for my face that would deliver fit and clarity.
BTW, none of the fast interchangeable lenses fog too much, the reason is that interchangeable design makes the seals between the lens and the frame much looser than a traditional goggle, so they get a lot more "drafty". So, unless your helmet is channeling your breath inside the goggle, you should be fine in any of the modern high-end goggle. Fit to the helmet is of course a different story.