I'd argue this is a better buy than a 27" 144hz monitor at the same price since no one will really notice the difference in motion but will certainly notice the difference in view area. Against a $50 pricier 144hz 34" same argument.. no one will really notice. But if you find a 34" at 240Hz around $300 then I'd say it's worth the price difference, at $400 though not really.. then I would wait for the OLED to drop in price and go for it
1000R is a relatively deep curve. (the number being the radius in millimeters).
I'd recommend trying out a monitor with that curve radius in a physical store beforehand, to make sure that you'd be comfortable with it. Not everyone would be.