So which do you prefer? Window or Aisle?

I've got a long haul MSP-NRT & a NRT-DTW coming up in November & all the good seats (exit rows & bulkheads) are taken - there's still a selection of windows & aisles left - I'm normally prefer windows, but I'm in debate here for this flight because it's in Y - the last several times I've flown the long hauls, I've been in C. I've done Y to Europe & it's no big deal, but never to Asia. I'm always the guy that has the luck of having to go to the bathroom about 14 minutes after the person in the aisle & middle seat fall into a deep slumber - so the aisle's probably better for that, but I love putting my head up against the window & passing out...decisions, decisions, decisions...