Window/ near exit
My refrain: A window seat as far forward as possible, near the exit.
Keep it simple.
Whichever category I am flying or whatever metal that is my choice. There are so many things on a plane you can't control (screaming babies, offensive PAX, noise, poor service, lateness, noisy galleys, weather) that a window seat offers the promise of peace, calm, and sleep. Nothing else matters as much.