By day this is a productivity powerhouse, currently Ubuntu 19.10 with an extremely minimal i3 desktop.
I use the left monitor for terminals and the ultrawide normally the entire expanse for my work in sublime text - on my font settings, I can get five panes of 80-col files side by side. The right monitor is Chrome and F12 for whatever I’m building.
I love my ultrawide. I was very hesitant at first and thought I may dislike it but it actually feels like I want an even larger expanse now! It works well for me, I know some don’t like it and I can see why. Part of why it works so well for me I think is my use of i3 which makes it really easy to fully utilise all the space.
And part 2 of the above... by night it’s running Steam on Windows 10 and it’s absolutely fantastic for gaming, especially the genre I lean towards (driving/vehicle simulation). Since NVIDIA still don’t allow mixed resolution surround, and I want ultrawide for work, ultrAwide gaming was a necessity which turned out to be pretty fantastic. Games like ETS2, ATS and Assetto Corsa feel that bit more immersive with the extra windscreen space. The monitor fills a good part of my vision and as I have trackir too, it’s really quite immersive overall.
Brands or models - Mine is the AOC U3477PQU which was extremely popular but is now sadly discontinued with no replacement. No bad word to say about it. I’m actually planning to buy another ultrawide soon and mount it vertically above the current one; I may end up getting a used U3477PQU again (AOC don’t seem to currently make any non-gaming ultrawides which is odd seeing how many they sold).
So with AOC gone, LG are basically the market leaders and supply panels to many others (AOC included I think) and Dell are also high-end. I know Samsung and Iiyama have some compelling value options at the lower end of the market.