Book a flight from/to Germany with Lufthansa or from/to South Korea with Korean Air. They use the 747-8i and Lufthansa even the older 747-400 (delivery issues with B787 and B777). It is a nice plane and efficient between high demand routes of major destinations (e.g. JFK<-->FRA). If you want spend more money, I recommend the upper-deck which is provides a private atmosphere.
Question: But I'm not wealthy?
Answer: Me neither. I had a nice talk with a complete stranger in the middle row in the Economy during the last intercontinental flight. No Champagne but nice memories.
If business: Lufthansa business-class seats allow for lay-flat but with older screens. I like them because use an open interior without the closed "office-cubicle" interior of other airlines. Look out of the window, drink champagne, eat a nice meal (or two...) or sleep.
PS: Booking the 747 keeps her flying.