Default What Quad Core Phones Under $250 work on Metro PCS 4G?

I'm looking into getting a new phone, I have metro pcs however I'm not happy with there line of phones. I'd like a Quad Core Phone. I currently have the Nexus 4 but it's starting to die on me so I need to get a new phone. I was looking in to Blu Products Phones
but I'm not sure which works on Metro PCS 4G. Any good phones I can possibly buy on ebay (Donesn't matter if it's used) that are quad core with decent specs that will work on Metro PCS 4G?? Or possibly really good dual core phones that work on Metro PCS 4G?