Hi Silver Cloud,
You have to be carefull when booking those aft cabin balconies on any Voyager class, some are great, but if you are more in the middle, there are some support beams that block the view. WE had a regular D1 on a corner and had a great view both from the side and the back. Any one on a Radiance class ship don't have that problem. If you are just booking a balcony on the side, more middle is always nice, close to elevators and stairs.