Help me pick

Help me pick, I thought that if I got a Chanel nano shopping bag it would be great because it’s not very easy to get. However I also thought the Chanel classic flap would never go out of style. However I still believe that the Chanel classic flap at some point would lose their popularity by a bit because of how many people wear it. Would it be wise to buy the Chanel nano shopping bag for investment or should I play safe and buy the Chanel classic flap. I don’t really care about how much fits into the bag