Sonic Defender
Headphoneus Supremus
Are not the 400i's $500 but yeah they are on my list to pick up when I have the funds.. Prob a few months from now.
Are they? They were on sale so often recently at $299 that I just assumed the price has remained down. I know some sellers if you e-mail them and ask for their best price will reduce the cost. Mine were new, and shipped for $389 US. PM me if you want and I can tell you who the seller was. Anyway, the 400i is really across the board a better headphone, as much as I love the PM3 I can't think of a single thing it does better or even as well (besides isolate and be portable).