The verdict is in: We're sticking with the '11.
The 13 came in today so we went and drove it, looked it over very thoroughly. Its a Limited as opposed to a Laredo, but the only quantitative upgrades over the '11 were:
Nav
Sunroof
Heated rear seats
HID projector headlamps
Electric power steering pump
Upgraded cylinder heads.
The only big plusses for me were the Nav and HID headlamps.
The electric PS is a minus (drives fine, but I've known several Challenger owners who've had to have warranty work on the pump unit.)
Don't give a rip about the sunroof or heated rear seats, and everything indicates that if the cylinder head problem hasn't popped up by 25k miles, it won't. Its also just between .5% and 1% anyway.
The other minus was that my wife and both thought the '13 just seemed slightly harder worn than the '11. A couple of HVAC buttons were sticky, and while it was still near perfect, it just had a more hammered-on feel inside. Nothing we could really put a finger on, but more a sum of a thousand little intangibles.
So when all things are added up- the 11 came out slightly ahead. Done.