Mitsuo

I'm wondering whats a good CPU for my Motherboard The Z97M-PLUS. It supports 4th and 5th generation i3/5/7 and not 6th (So no 6600K and such) and thats under 250~300 Canadian Dollars. Right now I have a pentium anniversary g3258 and its doing its job well but I would love more power especially when trying to play games such as GTA-5.