I need some help

Traveling sfo to manila from Sfo , 2pax

Travel time : Mid March to Mid April


Business class or First class (if it's not expensive and I can use mileage upgrade)

I have united miles and Aadvantage miles



Thinking of Korean air or China southern or air China for the business class seats

Any tips?

Budget is around $3k each ticket


I want to be next to my partner and want the nice hard products .. I am more for comfort and not picky on food as long as they serve well and offer more




Hope some people can give their advice

I don't know if I am posting on the write forum


Thank you so much