Well, I'd have to choose Jamie, she's been in the shelter long enough, she needs a permanent home. Especially if you're away from home most of the day, adult cats usually handle that better. However, if you want a more active cat, to entertain you with their antics, you might want to think about a kitten.
Just my 2 cents worth (and 6 cents from my 3 cats, all rescued)
I have 20, all but 2 are dropoffs.