There are lots of options. Tell me what kind of sound you want. Other wise, I would have to list tens and hundreds of IEMs.
I don't really know if there are any audiophile portables that doesn't leak in $80 price range. The cheapest I suggest is HD-25 II. But if you don't mind isolation, try Sennheiser PX series. You might as well look into IEMs.
Isolation wise, ESW9 doesn't really isolate much.
What about the Denon AH-D1100 for isolation? it doesn't have to cancel out everything just enough for people talking on buses or something like that. I find on-ear design uncomfortable after like 3 hours and since i am going to be listening to them for like 6-10 hours i would like a full sized headphones that isolate well while being not too big for portability (something like the akg 550 for example would be too big) Would you know any that fit this category? (preferably not noise cancelling headphones because they seem pricey.