I can't give you quite more of an answer than you've already got.. Just get an intel ;P AMD are kinda the budget processors and intel for the more high end pc's. intels give you a higher framerate, and with quite the difference.
Can't tell you much about the difference between the i5's though. I got the i7 6700 and works great in combination with my gtx 970, gives me decent framerates on highest settings for most games, except bf1 I gotta play on high settings.