Under $200: The Entry Tier
At this price, the BenQ GW2790 ($180) is the clear winner. You get a 27-inch 1080p IPS panel with BenQ's Eye-Care technology, including an ambient light sensor that auto-adjusts brightness. It is not glamorous, but it is reliable, easy on your eyes, and backed by a solid warranty. The 100Hz refresh rate is a small step up from the standard 60Hz. For basic office work, web browsing, and casual media consumption, this is all you need. Do not spend less than $180 on a 27-inch monitor; the quality drop-off below this price is steep.
$200-300: The Sweet Spot
This is where value peaks. The AOC Q27G3XMN ($250) is the best gaming value: 1440p at 180Hz with 1,152 Mini LED dimming zones that deliver genuine HDR. No other monitor under $300 offers real local dimming. The Dell S2725QC ($300) is the best all-around value: 4K at 120Hz with USB-C power delivery and built-in speakers. If you game more than you work, get the AOC. If you work more than you game, get the Dell. Either way, you are getting a monitor that would have cost $500+ two years ago.
$300-500: Premium Features at Mid-Range Prices
The ASUS ProArt PA278CGV ($350) is the standout here: factory-calibrated color accuracy (Delta E < 2) with 165Hz refresh rate. It is the only monitor in this range that does double duty as a creative work monitor and a gaming display. The Dell P2725QE ($350) is the productivity pick with USB-C daisy-chaining and KVM switch. The LG 34WN80C-B ($400) is the budget ultrawide option if you want the extra horizontal space. Above $400, you are entering professional territory where monitors target specific use cases rather than broad value.
$500+: Targeted Investments
Above $500, every monitor should be solving a specific problem. The ASUS ProArt PA279CRV ($500) is for color-critical creative work. The BenQ RD280U ($600) is specifically for developers. The MSI MPG 321URX ($700) is the best gaming experience available. The Dell U4025QW ($1,200) replaces your entire multi-monitor setup. At these prices, make sure the monitor's specialty matches your primary use case. A $700 gaming OLED is wasted on spreadsheets, and a $1,100 photo editing monitor is overkill for web browsing.
The bottom line: the Dell S2725QC at $300 is the right monitor for the vast majority of people. It does everything well, nothing poorly, and costs less than most people expect to pay for a 4K monitor. Start there unless you have a specific need that points you elsewhere on this site.