Its funny, those two monitors are like ships passing in the night, both are tempting, and combined would be something I'd buy, but taken on their own I'm less interested.
The OLED with its more relaxed curvature looks really nice, the Mini LED with its true 4k Ultrawide resolution is exactly what I've been looking for, but the OLED's lower resolution & the Mini LED's stupidly aggressive curve leaves me wanting neither.
I'll also mention that can we please adopt :10 high, horizontal is getting ridiculous, give us a bit of extra height. 24:10 Ultrawides are pretty damn near perfect for productivity, and they are the most common cinematographic aspect ratio. But only LG seems to be giving lip service to that ratio...