Well, I'd be the last one to doubt your knowledge on this matter. I know hardly anything about lenses other than Nikkor's (35 mm wise I mean). Still, the Nikkor primes are still much better, as for their optical quality, than the zooms. I'm sure you know that the 180/2.8, 300/2.8 and the 600/2.8 (all ED IF or AFS, doesn't matter that much) are still top of the bill for me, personally. The 80-200 2.8 isn't even worthy of standing in the shadow of the 180 - not even the newest model, while (especially used) it's twice as expensive. Together with an original 16mm 2.8 Nikkor and a 50 1.2, you'll have more than you'll ever need to buy untill the day you die (and you probably will soon, looking at the weight of all this ;) Hehe :) Well, again, I've only used Nikkor (ever - since day #1), so I can't judge any other brand of lenses.....