Most brands have many models that range in quality and features and what's "best" varies by personal taste, and needs.
Some people like high resolution, some people complain pixels are too small or need a more powerful GPU to drive it for 3D games.
Some people love 16x9 aspect ratio because it maps to HD tv content, others prefer even wider aspect ratios while 16x10 monitors have a large following.
Some people hate the grainy look for matte finishes, while others complain glossy screens are unusable with sun/lighting.
Some people hate the color shift of TN panels while others claim IPS are too slow to respond or bleed light on the edges.
Some people hate the lag scalers introduce while others like the ability to run at different resolutions and have analog inputs and on-screen displays.
You're going to have to define your needs/preferences if you want a good answer.
Unfortunately, you're unlikely to find a store where you can actually compare these differences side by side yourself.