<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by billhar:
(The) 707, 727, 737series, and 757 are all basically the same airframe that is either stretched or shortened. Perhaps this is why they are now outselling the Boeings.</font>
Well Boeing has 134 737s on order, versus 108 for A319/A320. Add in all the planes that Southwest and Ryanair have ordered (couple hundred, at least) and I imagine the 737 order book looks better than the Airbii, as I think only EasyJet has a 100+ plane order in for those.
Still, I find the Airbii to be my preferred single-aisle plane, and try to get them whenever possible when I fly UA.