Xiaomi Mi5 vs Redmi Note 4X: Comparing Snapdragon 820, 64GB ROM to Snapdragon 625, 32GB ROM

Hello, I am going to buy a new phone and the choice fell on the Xiaomi brand. Initially, I only had an eye on the Mi5 model, but then also in the Xkom showroom (where they are on offer) I saw the Redmi Note 4 on display.
Xiaomi Mi5, Qualcomm Snapdragon 820, 3GB RAM, 64GB ROM (no microSD slot)
Xiaomi Redmi Note 4X, Qualcomm Snapdragon 625, 3GB RAM, 32GB ROM (with a memory card slot)

In the option in which I can buy both of these phones, the difference in price between them is about PLN 400 and my question is whether it is worth paying extra?
My main point is whether the difference in performance of these processors will be strongly felt in everyday use. I do practically everything on my phone, watch movies, send money transfers, e-mails, listen to music, sometimes some games, simple games, apart from the basic tasks of the phone

The difference as with any other flagship vs. One will feel colossal, the other will not feel at all. The MI series is supposed to have a better camera. Redmi, on the other hand, traditionally wins in the category of disconnecting from the charger.