I just bought a pair of Sennheiser HD 497 cans and they sound good. I'm coming from a cheapie pair of Aiwas and prior to that 3 pairs of damn Sony 700DJs that I thought I had to have in my club DJ days...

I'll mostly be using these with my computer/cd player and at the college radio station during my show. And note to all you bedroom DJs, a community radio show is an awesome experience if you ever get the chance!

At any rate I've been reading on a few sites that some headphones benefit from a "break in" period where you play some dynamic music at louder volumes for a while. Is there any truth to this?