Alright Mike, these are dang near perfect, so I am going to nit pick a touch, but just a touch
When doing this I might clone a bit where the seam is. On the first one I can see the pano image meets at the bottom. I think with a little cloning work you could blend that right up.
Seriously, these are amazing. They would look cool with a city skyline, unfortunately I can't try that, my city doesn't have a skyline due to the mountains... well I guess that would make for a cool shot anyway. If I get time someday I'll give it a whirl.