While the BenQ MA270U certainly isn’t a Studio Display replacement, it performs excellently in all of the qualities that matter to me. First things first, this display comes in at $459. That’s cheaper ...

but that's mostly what you'll get unless you go for something crazy like 7680 x 2160 (that's an 8K monitor). Moreover, ultrawides are often curved, while dual-screen setups rarely ever are.