Hi Cali!
We're booked in a verandah cabin for our 7-night western cruise for next summer, but I have to say, we didn't start out this way. LOL Initially we were only going to do a 4-night cruise, in an inside cabin. DH and I took our very first cruise this past summer aboard a
Royal Caribbean ship. We stayed in an inside cabin and even though I was nervous about it beforehand, we really were fine, once we got into the cabin itself.
How many people would you have in the Cat. 11?? They don't have the split bathrooms. Since we are a party of 4, we originally were thinking of a Cat. 10, for the extra space, and split bathroom.
Yes, a Cat. 8 would be similar to the Cat. 5 cabin you had, but without the verandah. Not sure about where on Deck 6 those would be though. We're on Deck 6, cabin #6042, and I like the look of this location because I wanted mid-to-forward and that's exactly where this cabin is. We were in a forward cabin on our RCI cruise and we really enjoyed the bit of motion we felt, it was very nice being "rocked" to sleep at night
As for whether an extra $500. is worth the extra space and view, we just paid an extra $840. to upgrade from a Cat. 9 to a Cat. 6 so we could have a verandah. I think it's entirely up to you. Like I said, I've sailed in an inside cabin and was fine with it. But that was my first cruise and had nothing else to compare it to.
Good luck with you decision!