Food is generally better on QF and you also get PJs.

Depends on your preferance, but the BA seat used to be generally better than QF. You may need to be a bit more selective on which particular QF flight you take. The A380 has lie flat (normally operates the QF1/2) though on the QF 6/5 it is a B747-400 that is normally operated with an angled bed. Some B747s have been fitted with lie flat but the a/c that operates frm SYD>SIN>FRA (QF5/6) generally appears not to have been.

There's some info here about the B747 refurb:- You can probably find more if you search hard enough.

http://www.qantas.com.au/travel/airl...resh/global/en

Depends too if you like flying on an A380 (QUIET) or a B747 (intimate bubble or pointy end feel).

Frankly, having done all 3 but not for 4 months, although the CX crew can be a bit haughty I prefer CX over QF or BA.