I have been in an inside, outside, balcony and was ugraded to a mini suite once. Some considerations other than price might be how much port time and the length of excdursions you will do. In Europe and Hawaii we were quite frequently off the shiip at 8 or 9 AM and didn't get back until 6 PM so we took inside cabins.
The type of cabin we had did not have any bearing on how much we enjoyed the cruise.