I've been a home theater and speaker building enthusiast for years. I have a fully DIY setup that is audio bliss, but it becomes useless on weeknights, unless i wanted to spend tens of thousands of dollars soundproofing.
Once I learned of Head-Fi, I caught the headphone/IEM bug now too. I never would have known how amazing the HE-500 is without this place. Now I'm testing all sorts of headphones and watching my wallet get slimmer. lol