Depends. I think JP would be more of a draw for boys and Wonka might be a more girl friendly theme. The gameplay is what makes a game though and from what I've experienced Wonka isn't that great.
Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside