Originally Posted by
UNITED959
IMHO the UD is better because (1) rows 15, 16AB, and 17AB have extra legroom than typical C pitch and (2) the private cabin.
I agree on the legroom (though Rows 22, 25CDF, and 26CDF also have additional pitch), but the OP was commenting on the better service in the UD. As for the "private cabin", there are exactly the same number of seats as in the rear C cabin on the main deck.