Recs.
Updated
An ultra widescreen monitor from LG, with Dynamic Action Sync, Black Stabilizer, and 4-Screen Split
SpecsUpdate
Pros
Cons
Con Lack of support for ultra-widescreen in (old) games
A handful of games do not support 21:9 aspect ratio by default. Some examples are Overwatch, Fallout 3, and Starcraft 2. Thus, it is recommended to try it out in your local store if possible before getting one yourself. But if you are just an enthusiast gamer, then you can either install fixes (only works for some games) or play in windowed mode instead of full-screen (in a different aspect ratio).
Con Sandwiching of mainstream 720p and 1080p videos
Another problem with this aspect ratio is that your favorite Netflix shows or YouTube videos will have black spaces on the sides. Unless the lights are out in your room, you will definitely notice them passively as our peripheral vision is better on the sides.