Well as a TA, my advice would be take it for what it is, and don't compare with RSSC, thats what we do when we go on these more mass market cruises, and remember this, enjoy each cruise for what it is because if you spend the whole time comparing, then you will be miserable.
Agree also, get the highest category you can afford or want, mini suites on Princess would be my lowest level and just take it for what it is worth - its not all that bad, and remember at some point thats all there was!! And of course every situation is different.

Don - sorry that you had such an awful experience on Princess a couple of years ago -- we have really never had a bad experience, but I realize that a given week on a given ship can change the whole picture. Hopefully that would not happen again.