I think the most coffiny I've ever felt was Air Berlin.
BA feels like you are sleeping in the aisle.
LX apart from row 4/5 is a giant dorm like feeling.
Air Canada has dirty planes in general, and the old pods were tight

I've flown about 4 dozen different airlines in J, and especially flying as a couple, I still prefer the wide spacious 2 sets on airlines like LO and TK. Even though those are a pain for someone flying alone stuck in the window.