They all look really nice...... I like the 1st one....I like that style of seat. I also like the 3rd.
The 3rd almost looks like a barrel saddle...
Typically a saddle built for a purpose... barrels, roping, etc... would be a stronger saddle. ANy of them look like they are in really good condition. Make sure you check the tree....
I'd say for resale the 3rd will bring you more money back if/when you go to sell it.
Sit in them and see what you think and then of course ...sonny.
Be strong and courageous, and do the work. Don't be afraid or discouraged by the size of the task, for the Lord God, my God, is with you. He will not fail you or forsake you.
1 Chronicles 28:20