The Gigabyte M32U is one of very a few reasonably priced 4K gaming monitors. For the asking price of $800, you're getting excellent everyday and gaming performance, as well as an impressive list of extra gaming and productivity features.
The Viotek GNV34DBE2 is one of the least expensive 34" ultrawide gaming monitors on the market. It sports a capable, curved VA panel, 144 Hz refresh rate with AMD/NVIDIA adaptive synchronization support, and several other interesting features.
The EIZO FlexScan EV2795 is a powerful 27-inch office and productivity monitor with excellent picture quality and a host of useful features, such as USB-C daisy chaining and a built-in KVM switch.
The Vissles-M 15.6" Portable Touchscreen Monitor combines a 1080p IPS touch screen with several interface options to connect to modern notebooks, game consoles, and Android phones, all while providing a functional protective cover and built-in stand combination and coming in at less than $200.
The ViewSonic ELITE XG240R is a 24-inch, 144 Hz gaming monitor supporting FreeSync and adaptive-sync on NVIDIA. It comes with a fully adjustable stand, and an interesting RGB lighting system that can be synced with other components in your computer.
The MSI Oculux NXG251R is one of the least expensive 240 Hz G-Sync monitors on the market. It promises eSports-grade gaming performance and a host of other goodies. Is it hindered by its 24.5-inch TN panel or does it truly deliver?
EIZO's FlexScan EV2785 is an excellent 27" office monitor. It is equipped with a high-quality 4K IPS panel that has been carefully factory-calibrated and a USB-C port, which turns it into an attractive proposition for everyone who owns a USB-C laptop since the monitor can be used not to only expand the desktop, but to conveniently charge the battery and connect peripherals.
The Eizo Foris FS2735 is a feature-packed 27" 1440p gaming monitor that comes with a refresh rate of 144 Hz and FreeSync support. Its price tag is hefty, but it performs well enough to be used by eSports professionals, both in terms of in-game responsiveness and picture quality.
The AOC AGON AG271QG is one of the least expensive 27" high-end gaming monitors on the market. Your money will buy you an AHVA (IPS-type) 1440p panel with a refresh rate that goes all the way up to 165 Hz, as well as a G-Sync module for sublime smoothness of in-game action.
The Acer Predator XB271HU is an impressive gaming monitor equipped with a 27" 1440p IPS panel that can be overclocked from its native 144 Hz to 165 Hz. Absolute smoothness of in-game action is ensured by the built-in G-Sync module, and its ultra-thin screen bezels make it as immersive as they are downright pretty to look at.