This is my first build! Coming from a ASUS Chromebox, this is definitely quite the upgrade. I'm still testing distros, but for now I'm running Ubuntu 18. I built this machine after settling on a quantitative specialty in my Political Science Master's degree.
I went with AMD for their price/performance ratio and reading about their friendliness to open source. I use R and RStudio for most of my experimentation with data science, but I'll be learning more about Python soon.