What is really the best choice of a smartphone ?

It depends what are you going to use for it
I have a Xiaomi Mi 8 Lite - I'm happy with he, Is the best cell that I already have

Iphone = Charge all moment, but is good, I think that is the best indicate by your fame, - wowww I have an Iphone, I pay - $3000 and I can't see cause your screen so small, but I have one :D happy, happy, happy
Samsung = Big price, but someone are good, S10 20, the more cost is good, I like your touch screen
Motorola = Price good, and usually basic, you know 3RAM 16/32 STORAGE +/-
Asus = Idk, but a friend have and he like