Pixels have a great camera and shit for quality control. If you get a good one you're golden, if you get a lemon, you're screwed -- I am the tech support for our enterprise account at work, and I had to send a good third of our first round of pixels back for warranty replacement, and then half of the refurbished ones back for another replacement.
The Samsung S9 is hands down the best phone on the market right now, provided you're not an iPhone user. The plus is worth the extra money; it's faster, and the bigger screen is great (I do use mine as an ereader, though I just have the 8+). We have zero problems with these at work, except for....
If you are clumsy, get an Otterbox if you DO go with either the S8 or the S9, because of the aforementioned glass back. They are hands down the most breakable cellphone we have ever had. They will crack in your pocket if you don't have a case and you bend wrong, and a drop on a corner (because glass) will shatter the whole thing.
If you are super super clumsy, look at the Kyocera DuraForce pro. They are waterproof, shatterproof, and drop proof. The battery life is great, they don't come with much bloatware, and they are the workhorse of the phones right now. They just work. For a year. At which point they very rapidly deteriorate. If you plan on keeping a phone longer than it takes to get an upgrade, wait until the next workhorse, whatever that ends up being.