Make sure it has superior IPS panel. No color shifting at angles and picture looks much better. Also look for low input lag. If you want 24" ill go for Dell U2412M or HPZR24W and if you want 22" take Dell 2209WA. All of these monits had low input lag. Low response time advertised on cheaper monitors (TN panels) is fake and, in fact, modern IPS monitors are faster.