I have the miles for a RT flight from either MSP, ORD, or DTW, to AMS, or CDG in business class. What is the best airline? Should I take the direct from MSP and the NW 333. Should I connect in ORD and fly KL 744, or AF 343 from DTW?
OR should I splurge on VS Upper Class there (SFO) and coach back (JFK)?