Okay, I have a pair of Optimus (Radioshack) LV-20 headphones. They were okay. The stuff protecting the foam fell off after some abuse, but they still work okay. The other day, I threw then agianst the wall. Long story, don't ask

Anyway, I need a new pair that's cheap (under $30, $35 acceptable). Need good sound quality at least, they must be durable. Folding headphones would be great. They must be able to block out noise (top priority). I'll use these for my computer and CD player. Any suggestions?