CX F is the least restrictive seat/bed in the sky.
Not a big fan of the service, but the hard product is awesome.
Overall I'd take SQ or NH over CX due to excellent hard and soft products.
That's why I booked SQ for the return. I really wanted it for the inbound so I could spend shabbos in HKG, but it didn't work. We'll actually be flying a redeye SIN-NRT in F on a 777-300ER then connecting 11 hours later to R NRT-LAX, so I'll get to try both products.
Wow. Heck of a first foray.
But, be warned... flying will never be the same.
Piece of unsolicited advice? Fly economy and forget F.
We've been moving up slowly. My first J was UA J.
Next will be AZ J followed by KL J in a few weeks.
We fly Y loads of times for short, under 5-hour flights. Painful, but doable.
In terms of your advice, thanks but no thanks!
Make sure to be awake every minute of your flight time. No first class flight feels as good as the first one.
I can never forget my first F flight - even it was just UA F.
Why stay awake and not take advantage of the bed? You can be guaranteed I'll be asleep on SIN-NRT flight.