Earphones / Headphones: Where to try, what to buy?

photoben Yeah, what was a simple "what are good headphones?" is slowly turning into a RLJ debate...I can feel it.
Where's hippy? I want to chat about beer and sweets.

I'm working my way through the posts..

I don't wear headphones riding - have done but prefer to hear nature, ie. the truck about to roll over me :)
Actually thing is it's not the cars that headphone wearers miss, it's other riders passing them.
I've had a few ipod heads veer towards me without looking (sure, "looking" is the key but hearing me click my way towards them would've helped)

My mate is going to Belgium for his birthday and said he'd bring back some chocolate beer..