I love the 748 First. I thought 1A and K would be too close after doing 1A in J on the 744 and really not liking it. But then I did 2A in F last November and saw 1A in F and thought that the space was good.
My only complaint is I wish the bathrooms were larger. Every LH/LX has its flaws I suppose. A380–Seat is getting dated. A346–seat is getting dated, no closets, small bathroom. 77W—Small bathrooms, no closets. LX A330–Smaller TV screen, no closets, small bathrooms.