The 750 ti is more of a budget build GPU, still decent.
If you are willing to do mail in rebates then you can get a R9 290 for $240 roughly ($260 without), which is probably the best card you can get around the $250 price point.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150697&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=