I'm in the market for a new external display for my 13" 2018 MBP w/ Touch Bar. My three main considerations are the LG Ultrafine 4k, a 1440p 27" from Dell, or an LG Ultrawide 1440p monitor. 4k, I'm all for it, but the LG ultra fine is 21.5 inches and I want a bit more screen real estate than that. The 27" 1440p Dell looks great and I know I'd be happy with it. I'm leaning towards the Ultrawide. It's 34 inches(3440x1440). Any reasons for choosing it over the 27" or vice versa? Should I be going with 4k? Thanks for any and all opinions.