Before USAir-AA merger takes place, I decided to use the miles for the reward everyone raved about - USA to Asia via Europe for 90K.
I will be booking the following route:
LAX-EWR/or IAD-AMS (stopover) so far on United
AMS - ZRH- PVG on Swiss
PVG - Seoul - LAX on Asiana

I would love to experience/get seats more on Asian airlines: like Singapore,ANA, Asiana, Thai.
Reading reviews of other travellers got me to think - maybe it would be a much better experience to get First Class for 120K OR it is not worth it, business class would be just as great?

Also, perhaps someone can suggest "better" routings to get seats on Asian airlines. How do you rate first/business classes between the airlines: Singapore,ANA, Asiana, Thai. I also found seats on United Dreamliner for Asia-USA segment

Thank You