You are in a jam, my friend. Both items would benefit your next level of training.
I would opt for the Weber. It does double duty as a grill/smoker, and as a lid for the UDS.
Your response to your wife should be this:
Yes, the bathroom needs retiling. The money we save by not burning up the meat I cook will pay for it.
Dbl Bbl Smoker, UDS, ECB, Char-Broil gas grill & charcoal grills, SJ - Certified Moink Baller