My favorite airline is Singapore Airlines for an outstanding First Class (tried on A340 and B747-400) and for a very stylish Raffles Class (or business class as they call it).
Confort for me means fully reclinable/flat bed seat, meal presentation and meal service, a very friendly and caring cabin crew.
I'm not that much into watching movies or playing games as I read while flying.
is really on top of the list.
Then, after SQ
, my other favorite airlines, and those I also fly regularly, are:
KLM upper deck on B747-400
excellent new business class lie-flat seat onboard the A330 and excellent upgraded 4-course menu (very good wines).
Other excellent experiences in C-class:
I very negative note: Thai
I recently flew to Bangkok from Rome and it was non-stop on that terrible and very old B747-300 where the c-class cabin was showing the very same interior as 10 years back: no tv, reduced pitch, no foot rest.