I hate to be a party-pooper, but having flown QR A380 F DOH-CDG-DOH in April 2017 with Mrs PtF (and despite us being two of QR's greatest fans) we are both of the opinion that, availability of Krug notwithstanding, QR F lacks the wow factor over QR J - I'd already formed a not dissimilar opinion after previous QR F A340 and A330 flights.
Admittedly we got a fantastic fare deal (GBP1,250 per person QR F/F CAI-DOH-CDG and vv) however in future we're more than happy to 'slum-it' in J.