I own:
K1000 - amped with the Pass Labs Aleph 3, these are my favorite headphones of all I currently own or have owned.
K340/w velour pads - Have a very smooth sound and a magical midrange. Although I do enjoy them, the jury is still out as to if they will stay in my collection or not.
AKG K81 DJ - Love them for when I need a closed portable solution. I use them with the foam inserts removed. I still have comfort issues with them (and yes, I employed the 'tong' stretch technique). If they don't loosen up enough to where I can wear them for more than a couple of hours without discomfort, they go - which is sad, because I really like the way they sound.
have owned:
AKG K701 - Sold them because their sound signature just didn't 'do it' for me - was a bit too laid back for my tastes. I also just couldn't get past the 'iPOD toilet white' color scheme, YUCK! Normally I am only concerned with the way headphones sound, but I have to make an acception in this case - holy crap these things are ugly. Among my collection of other headphones they looked like a big white turd floating in a punchbowl. PLEASE AKG: change the colors of these things A.S.A.P. I might even give them a second chance if they had a version that was in a black or grey non-glossy finish.
No offense to K701 lovers BTW, beauty (as they say) is in the eye of the beholder.
I digress.
Yeah I think I qualify as an AKG fan, but I certainly don't consider myself as being 'elite'. I think 'insane' would be a better adjective to describe my condition/affliction when it comes to headphones and headphone related gear.