Well, I'm all over the map—which is why I keep re-thinking this.
My original budget had been ~$1,400 with the goal of having a primary dev machine.
But my current thinking under $700 and to sink the rest of that budget into building a desktop that can handle the heavy lifting via SSH or x forwarding.
I'd be looking for a 14in screen with no preference for convertible vs regular. HDD space doesn't matter, but I'd prefer at least 8 GB of RAM (for Electron communication apps… sigh)