What's the best airline to fly to Singapore? The trip is a daunting 20-30 hours depending on the airline.

I usually fly CO but with their lack of upgrade availability, reward seats, rude FAs, and so on is causing me to seriously consider switching my FF program. (What good is it to be Elite when the perqs are good only in theory?)But that's story for another board altogether.

For this trip, I'd like to fly on an airline where FAs actually will be nice to passengers and there is some measure of seating comfort on the aircraft. Perhaps Cathay Pacific or Singapore Airlines?

Would appreciate your thoughts. Thanks