Thanks for the replies. I think they are improving, or maybe I'm learning to fit them. They definitely are unforgiving towards source material, that's for sure. I also installed some Comply tips, which helps with fit and comfort.

I bought a pair of HF3s from Amazon this week. They came on Monday and the right headphone was totally borked -- all crackles and static. While I was waiting for a replacement pair to arrive I experimented with the fit and found that the only tips that worked for me are the black foam ones. I...

I received my HD 668B headphones from Green Fly Music Supply on Saturday. Price was $39.99 and I didn't see the free shipping option for orders over $49 and paid $15 for FedEx (oh-my-god-this-is-so-slow-and-painful) Ground shipping.   My rig: iPhone 4 --> Superlux HD 668B   The short...

@shawnd2030, my experience was that Rdio had disappointing audio quality, which it too bad because many of my friends are using it and it'd be fun to join them. Pandora One and MOG sound much better to me. Where fid you get these bitrate figures?

If you go more full-size, what about the Audio-Technica ATH-M50? Shure SRH440 or SRH840? For a smaller set with iPhone mic/remote, Marco Arment likes the Sennheiser PX 200-IIi.

(Was going to request adding the Shure SRH440 to your list, but I see that's already been done. Thanks!)

(Oops. Double post.)

Superlux HD-668B?    One of the other Superlux?  

For those running Macs, there's a little app called Noisy that will generate white or pink noise. Very simple and easy. Also, it's free.   Source here: https://github.com/justfalter/noisy Download the app directly: https://github.com/downloads/justfalter/noisy/Noisy.app.zip   It's not...