My first few Android phones were Samsung. The only one that didn't die out on me within the first six months was the original Note. I had the Galaxy S, SIII, S4, Note, Note 4, Note 5, and I think at least one or two others. Every one of them, except the original Note) gave me various functional problems. I basically gave up on Android and used iPhones for a number of years.
A couple of years ago, I switched back on a Google Plxel 2XL and have stayed with not only Android, but the Pixel phones, since. I use my current Pixel 3 XL hard... My job would normally have me on the road 2 nights per week, lots of time in airports, in the air, and plenty of use throughout the day on my phone. After a year and a half, by battery is finally starting to show signs of my charge going down more quickly and I have to plug it in during the day once to top it off so I make it through the day.
I just switched back to my Pixel 2 XL so I can take the 3 XL in to have the battery replaced. I don't like FaceID tech and won't buy the 4 XL as a result. I might buy the 4a as it will suit my needs and I really don't want to pay the premium for the 5 series when it launches.
No bloatware in the OS (much more responsive), updates are well ahead of what any carrier-branded phone offers, and Google will cover you for full OS upgrades and updates for like three years. I found them to be a much better overall value than any of the other brands.