If you haven't bought anything yet, we went with Googles phones after our banking apps wouldn't work with our old Samsung S3s. We absolutely LOVE them, and the improvement in cameras and not having Samsungs crappy interface on top of the Android stuff made them a breeze to use.
If I can help it, I will not be using any more Samsung phones, and will be sticking with the Pixels as long as we can afford them.
BTW, our Pixels are not tied to any carrier, and will work with them all. I am currently with Straighttalk, and my DW is with Google FI. We are considering switching to Visible, but not ready to make the jump yet. I know Visible will let you use the hotspot as will Google FI, but Straighttalk will not.