The size order for depth is 9, 12, 15, 14, 11, 10, 13 from deepest to least deep.   There are also differences in balcony width as well as differences in bed location (near balcony vs. near closet) for the stateroom.    For a good combination of view, balcony depth, and avoiding noise from Spice H2O, I recommend deck 12. From there, decide on bed location. My preference is bed near balcony but some prefer the opposite. My first choices on deck 12 are 12308/12908.