I want to fly First Class or posh private jet or not at all! Sitting up straight - yucky; someone in front of me reclining ... much more yucky! Over the years, I've flown in everything from a 2-seater with no heater (froze my buns off) to a C-130 with cargo and basically standing room only (and a sick 18-month old son) all the way from the Azore Islands to New Jersey. I've been on lots of commercial flights (no First Class, regrettably) and they are just barely tolerable.
Actually, scratch that first sentence ... I'm not getting in any more flying machines. I'll bloody well walk first!
I did go all across Canada by passenger train, though, back in the days when that was a classy way to travel (and probably still is) and I'm here to tell you ... I had a super FINE time!