Haha, my husband said the same thing.
I went to the store and tried both on and I ultimately went with the leather. The moment my husband said that, I just could not get that price difference out of my head. Especially when I have Longchamp nylon bags for much much less. (And generally when I have the slightest doubt or question about a potential purchase, it usually is a no for me.)
Don't get me wrong, I love nylon, so lightweight and durable and my Longchamp bags are work horses.
However, the way Prada prices them, does make me question how much I am paying for nylon vs leather.
Another reason I went with leather:
I also have a lot of black bags with gold hardware, and a lot of gold jewelry that is yellow or rose/pink gold. It just goes more with what I have and therefore I tend to reach for it often. I like to get my cost per wear and hate it when a bag is just sitting there, sad and unused lol.
I will say, the leather and gold definitely stand out a lot more than the nylon and silver. It is a little more unique when I wear it out since most people buy the nylon.
But if you want something more casual and low key, then maybe the nylon is better.
Either way, both beautiful bags, great for daily use. Good luck!