If you are going to be gaming only, don't get anything pricier than the R9 290. This one looks beautiful.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121842&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=