Best Recommended Flights from China to Sydney for Comfortable Travel

I’m on the hunt for some great flight recommendations from mainland China to Sydney. To save a bit of time, I’m planning to depart from a southern city. Unfortunately, economy class is a must [crying emoji], so I’m really hoping for some advice on which flight might be the best choice. Here are the options I’m considering:

1. Guangzhou to Sydney: 08:05-19:40
2. Guangzhou to Sydney: 21:00-08:25
3. Shenzhen to Sydney: 18:55-06:25
4. Xiamen to Sydney: 22:00-09:20
5. Haikou to Sydney: 02:55-14:15

If you’ve taken any of these flights, could you please share your experience? Any feedback would be incredibly helpful! [frowning emoji][frowning emoji]