Oh, for sure. I'm with you there. I mean, I've only heard the HE90 once and I would not put it past me to romantisice the situation.
The Omega 2 I've heard around 4 times at various meets on various amps and it never grabbed me... then again, I hear about lots of people who have heard the K340 multiple times and never liked them. So we can chalk it up to different preferences or just that perfect system synergy that we both seemed to have reached with our respective headphones. Sounds like another headphone I know.
Actually, it sounds like most of the headphones that are really good. They require time and effort to show their full potential.