Do F on the Outward then you get to enjoy the New Concorde Room in T5.

Personally I find CW clinical, whereas other than the very very rare Rogue FA, First has style. Personal Champagne service, better food and just a nicer experience.

I am starting to appreciate BA First more and more as CX and QF start placing inexperienced locally [i.e LHR and BKK] recruited FA's in their First Cabins. BA Flight crew in First are at least always professional.

Just flew on the new refurb First Cathay 74A and the FA's never offered after take-off cocktails, I finally had to ask when they started to lay up my table about One Hour into the flight. Just lack of training and comitment from what seemed a newly recruited crew showed throughout the flight.

IMHO when you are asleep all cabins look and feel the same, another reason to go for the Westbound Daytime flight for the First experience.