What is really the best choice of a smartphone ?

I used to use iPhones before but I wanted to customize my phone more and have more features. I switched to LG G4, was good at first but battery life quickly degrades and with how there were general problems with every phone bricked. It also used to freeze a lot. LG had terrible support with this. Right now, Samsung seems to be a pretty solid pick, not as slow as my previous LG and battery seems fine.