I have 2 PE tickets on a DFW-OGG flight. It seems like 2 side seats would be best for a couple. Those aren't available, so what's the next best? I see the arguments between bulkhead and non-bulkhead. Interested to hear any more opinions of that

If those are all taken, and only middle seats in rows 14 and 15 are available, are there any subtle differences between rows 14 and 15 and having a pair in DE or GH. Maybe under seat spacing or something else that makes on better than the other?