I don't own a nord and I either hear RAVE reviews or like, TRAGIC meltdowns. I mean, I DO hear it's a nice vape and for a Smok product (the company who makes it) I think there is more love than hate, which is unusual (Smok is known for it's ah, quality control issues.)
I would have to guess the Aspire is going to last longer.
We are also at kind of a weird time in vaping so I might also suggest you just each keep your vapes, and buy new ones of the other sort, so you each have a backup vape. And maybe some coils and pods or whatnot. It's not clear exactly what is going to be available when and etc.
Anna