The only First class product that would definately pay/upgrade is SFO or LA to NY. The product is at the level of an international cabin. I used to fly mostly on UA and for the most part I agree that the F class is very unimpressive on domestic routes EXCEPT transcon nonstop. The last time I flew on UA First JFK-SFO it was truly excellent. I had a 5-6 course from appetizers to dessert with chocolate. MAGNIFICENT!!!