If I had tons of money, this the one I'd get from sear's.
http://www.searsbaby.ca/e/products/p...D=0&SizeValue=
It's indoor/outdoor and provides protection from the sun. The little door on the bottom is perfect if you want to connect an xpen around it. It would be too cute seeing the puppies coming in and out from it.
Of your choices, I think #2 is cute. I'm sure they'll love whatever you pick!
Good luck!