I reeeeeeally like the 9 month old. Not only is he gorgeous, but what you see is what you get personality wise too. He's still young, but can hold his own with Tucker (and the girls) right away. No potty training. Sleeps through the nights.
Too bad you can't see them both in person though, and see which one your 3 clicks with better.
Good luck with your decision! It doesn't sound easy!