Is a Nexus 5X a good buy?

I have had an s6 active for right at a year. The phone has been a POS since I bought it. I am going to buy something different. I can get the Nexus 5X for around $200 brand new. I can sell my s6 active for almost $150. I plan on switching to google Fi when my AT&T contract is up in a year. Is the 5x good enough to last me a year? Possible stretch it out to 2 year since I can use it on google Fi?

I also considered going ahead and buying out my AT&T next payments and making the move to Fi now. I figured it up and think it might actually save me money over the long term. Any thoughts on this plan.