I haven't heard that many phones, so my opinions are hardly authoritative. Given that disclaimer, here's what I have to offer to the thread:
* Phones I've heard that didn't work for me: hd595, px100, k701, gs-1000.
* My favorites:
Koss ksc75 - They're cheap, comfortable, and sound better than anything close to their price. I listen to them at the office when I can't use my e4.
Grado HP-1 - I bought these when they first came out. They're a bit uncomfortable and not the punchiest phones I've ever heard, but I frequently enjoy them for hours. I've got many years on them now and still love their sound.
AKG K1000 - This has become my quest for the perfect sound. I bought a used pair based on what I had read on Head-Fi. Initially, I was unimpressed with what I was hearing. They were expensive when I bought them, but the initial price turned out to be the lowest cost I would incur. Since I bought them I've:
replaced my dac
replaced my amp (twice)
replaced my interconnects
replaced the stock tail cable
(soon to) replace the main cable
So far it's been an expensive journey but I'm very happy with the result.
* Other phones I like:
Audio-Technica ATH-AD2000 - I heard these at a meet. Very nice!
Sennheiser HE90 - I heard the Orpheus system (both phones and amp) at the same meet. It's VERY sweet -- and nearly as nice to look at as it is to listen to. Also, I appreciate that the price of the Orpheus system makes me feel like a bargain shopper while I'm building my K1000 setup!