Intel, using the new Pentium G3258 which can be overclocked to good effect, even on non-"Z" motherboards. You'll end up with a system that is "decent" now, and has plenty of upgrade room for later. The video card will be something in the range of a R7 260X, R9 270, GTX750Ti, or maybe GTX760.
Do not use a Corsair "CX" PSU; select a Seasonic- or Super Flower-built PSU like XFX or Rosewill Capstone.