The source driving them will be my phone (Atrix 2), consider that.
I can care less about aesthetics, or design (open back, semi, closed)
Currently considering the following:
The only pair I have that would probably fit your requirements (cost) is the Superlux 668b. The soundstage is pretty good, the bass is punchy enough, and it's quite a decent all-rounder.
The only problem would be whether or not you would be able to drive them with your phone...I'm sure more experienced members could answer that question for you.
I own the Ksc75 and have struggled with the fit. The sound doesn't particularly impress me either.
I would recommend the Samson SR850 / SR950 similar to the superflux but you can get them with velour pads so are much more comfortable. I own a oair myself and still enjoy to listen to them now and them considering they are bang on the $50 you wont get anything sounding better for that price.