A basic 27-inch 1080P monitor costs about the same right now. The Samsung Odyssey G5 gives you 1440P, 180Hz, 1ms, HDR10, AMD FreeSync, and a height-adjustable stand for the same price on Amazon.

Save $13.29 on the MSI PRO MP273QW E2 27-inch QHD IPS monitor with 100 Hz refresh rate and built-in speakers, now $156.70 on Amazon.

Getting a monitor of the right size is an important but tricky business. With 24-inch monitors being the starting point for so many and ultrawide monitors bringing in the hype, if you prefer 27-inch ...