A lot of us, here in the states, are facinated by castles, simply because we don't have any. Not of that age anyway. We visited Scotland a few years ago and truthfully, it seemed there was a castle ruin every few miles. We rented a car and drove, interesting experience, but the only way to really see the beauty of this place. I hope one day to get to return, I didn't have nearly enough time to see all I wanted to see.
I think 4 in my favorite, but I agree the cloud is a little over exposed. I can't wait to see the other side of the castle. Good luck.