I own a LG G4 currently.
I used to strictly buy Samsung phones, but when they went to sealed batteries I didn't follow. I've always had some sort of problem with Samsung's phones, whether it be a bad battery or some other weird quirkiness that I'd have to reset my phone every other day.
I have discovered, now that I bought something besides a Samsung, that it is Samsung and not Android like I previously thought. I've had my G4 for a year and a half and haven't had any hardware issues. I did have a software issue when updating from 5.x to 6.x that required me to software reset my phone, but I haven't had any issues since then. I doubt I'll ever buy a Samsung again, at least in the Android ecosystem end users actually have a choice of manufacturer.
Actually, now that they've taken away the removeable battery and headphones jack, it guarantees I'll never buy one. I want a phone that's actually functional and can run alternate browsers. If I wanted to get a phone that went full-Apple-retard, I'd just buy an iPhone, not an Android device.