We chose a cat 8 on our last cruise (because the thought of being on deck 1 or 2 freaks me out, cat 8 is essentially the same as cat 9 but on the higher decks) and although the porthole was nice, I don't think it was worth the extra charge. We had already been holding a verandah room for our next cruise in Jan 2003, but when we got home, based on our experience on our last cruise, we downgraded to a cat 10 and saved $800 on the reservation. We did check out a cat 11 room just to see but we decided that the split bath would be worth the extra money over a cat 11, but honestly we'd rather have the extra $$ for a window/verandah to spend on other things on the ship. We were never in the room and certainly not during the day when it was light enough outside to actually see anything (except for a few minutes to change clothes).
Lisa