I haven't flown on Asiana, yet i too have read about the incredible service. Their hard product, unless you are on the new first cabin (which I believe is out of ORD), simply doesn't pass the test for me.

I flew on ANA to Japan last year from ORD. Not even the First Square...still, the seats were wonderful. Extremely wide and comfortable. The service and food were amazing...I can't say enough about it. I flew Singapore this year in first, and as much as I enjoyed it, the ANA experience was even more special.

I vote you take the chance on Chicago and get BOTH great food/service and a wonderful hard product.