Best monitors for $399 and under

What are some of the best monitors for the price listed above? I am looking for a 1080p monitor or a 4K monitor for that price. Any brands, except HP will work.

I bought this 28" 4K monitor recently. The menus are default Korean, but you can switch to English. Absolutely gorgeous display. $365 including free, stupidly fast shipping. Also included a power adapter. Super pleased with my purchase.

If you go for this and have problems setting the menu to English, let me know and I can help you, as I can read and understand basic Korean.