I think that these are the best pictures of your boys so far. They're both very handsome.
I'd also be scared to see any of my cats sitting on my balcony ledge. I also live on the 2nd floor and I don't like my cats to be out on my balcony because of this. Storm will open up the screen door for everyone and one time Sky was sitting on the ledge and it was very dark outside. Luckily he jumped down as soon as he saw me.