So, a confession: even though I fly a decent number of miles every year - obviously nowhere near as much as some on here fly, but still somewhere shy of about 25k in a calendar year - and yet the only airlines I've tried are pretty much Lufthansa, JetBlue, the three US legacy airlines (Delta, AA, United), and the most obvious SkyTeam ones (KLM, Air France, Aeroflot) - all in economy. That's not exactly a huge portfolio, and usually I go for the cheapest ticket that will let me credit to Delta, but I would also enjoy "trying" a few new airlines, so my question is, which airlines are absolutely 'must-try'? I'm not just talking comfort here (i.e. whether the business class seat reclines fully or not, because I can't sleep on planes anyway) but rather, which ones offer the most unique product - in terms of service, onboard bars or showers, aircraft design, etc? In short, what I love about travel is out of the box experiences (of the positive kind, I should specify) rather than the luxury, so for that, what airlines should I put on my aspirational travel list?