You can get a 13" 1920x1080 IPS panel on a Chromebook for about $350. With ~5 minutes of labor (swapping in an SSD) you can install Linux natively on it with GalliumOS.

Full details can be found here:

https://nickjanetakis.com/blog/transform-a-toshiba-chromeboo...

Been using it for a few months now for development and it's been great.