Pricing Business class from MSP to IST on Delta immediately drove us to look elsewhere even though it added another connection. Checking United, we saved nearly $1000 per person each way, though we returned premium economy from Milan as it was a daytime trip and you couldn't get to MSP without a stop and change of planes. (We embarked on a cruise from Istanbul to Venice).But searching United we were pleased to see the trip to IST was a code share operated by Lufthansa once we got to Chicago O'hare. Our past experiences with United Business Class would have made us think twice before buying this ticket. BUT-Lufhansa from Chicago to Frankfurt was on a NEW 747-8. Flat reclining seats made for a reasonable nap. The wine was fine, OK not that great, the food was palatable, the service polite and attentive. The European leg from Frankfurt to Istanbul was daytime on a 737, First class (3x3 seating with the center seat left empty). Our luggage was promptly delivered and we were off to the hotel. All in all a nice flight. I can heartily recommend United business class to Frankfurt and Istanbul(especially since its a code share operated by Lufthansa).