What kind of headphones should I buy?

I’m looking for full size/earpad headphones that are under 150$ [hopefully under 100$ if you can]. I was looking at the Sennheiser PX100, but then someone suggested the Skullycandy brand and I know nothing about Skullycandy except that they are relatively new. Factors I’m looking for is comfort, sound quality and well I guess the obvious.

Thanks =D