The greek salad at the CX F lounge is quite good -- bordering on excellent (also is a very unconventional greek salad). The rest of the food is OK to good (and better than the BA F lounge, but not better than the real BA F lounge, which is of course the Concorde Room). The 2 XO cognacs offered by CX in their F lounge are noteworthy (though I had to drain the last ounce of the bottle during my last visit).

CX F service is full of small details. And rather refreshingly CX offers ultra high end non-alcoholic drink options (teas that cost >USD 100 per pound, to go with their wines that cost that much). My favourite service element, and how you can instantly tell the FA quality, is the CX approach of putting the glass down with the CX logo facing the pax; the better crews do this in one fluid motion, every time; the less good crews have to fiddle with the glass to get the logo facing in the right direction. I guess Feng Shui dictates that champagne tastes better when the CX logo is visible to the passenger.