Congrats on the New 3DS. I love mine. The main reason I got one was for Xenoblade Chronicles but the second analog nub and the faster processor are definitely worth it on their own.
I haven't found a Wii copy of Xenoblade anywhere for less than $100 or I'd buy it again. Plus the drive on my Wii is horribly loud and distracting.
Walmart had Wii minis for 90 bucks the other day but then there would be the issue of transferring licenses from the old one.