Let me be even-handed: Airbus builds comfortable (esp. the A320 family, A340), while the US builds durable (all Boeings, DC-9 family, DC-10, TriStar), and the UK built solid (BAC 1-11, VC
-10, BAe 146 family). Regional aircraft are a separate category, but I am impressed by the longevity of the Fokker classics; the F27 and F28, many of the former of which are flying well past their 40th birthdays, and both of which are pretty roomy. I'm not quite convinced by the build-quality of Bombardiers, ATRs and EMBRAERS, however, in addition to looking fairly cramped.