In PE, for flights where I want to be mostly awake I prefer row 12 because I have more room to work, and for flights where I mostly want to sleep I prefer row 14 because I can recline my seat whenever I want without worry and I can stretch my legs under the seat in front of me. I'm about 6'2" FWIW. I almost never fly in row 13, it feels like the worst of both worlds.