I would agree that US wins the consistency game. It does seem that the US FAs work the cabin according to the prescribed service standards in their manuals (hang coats, offer PDBs, make refill rounds once in the air every 15 mins, etc) more often than their AA counterparts. AA, on the other hand, seems to be more polished as an airline, as the pursers always introduce the crew, aircraft have power, IFE, and the FAs wear actual uniforms.

I prefer Airbus aircraft, if only because the interior of US F cabin has become so familiar to me over the years. There are a few 319s and 320s on the East side that are starting to show their age (the 1998-2000 deliveries), but on the most part, US aircraft are much cleaner than AA aircraft that I have been on. Some of AA's 737s remind me of US's old 7-dirty-7s when they were still flying (and neglected).

Oh, and my biggest gripe - my roll aboard doesn't fit straight into the 737 bins. The Airbus bins are slightly deeper.