Refresh rate on the Asus is 60 Hz, not 89 Hz.
The ROG Swift is probably the best gaming monitor on the market at the moment. It has good colour reproduction for a TN panel. The refresh rate and response time mean reduced ghosting and image blur in fast paced shooters, etc.
Most other screen of this size and resolution are IPS type panels (PLS and AHVA are equivalent) or there are some starting to appear that are AMVA.
The IPS panels generally have better colour but some glow in the corners when viewing a dark image.
The AMVA panels have colour almost as good as IPS, without the glow and with much higher static contrast levels than IPS or TN (dynamic contrast ratios like 20,000,000:1 mean nothing, static contrast is about 1000:1 for IPS or TN and 3000:1 for AMVA).
What none of these monitors can do is match the ROG Swift for responsiveness.
It comes down to what you want to do with the screen. I would suggest reading a detailed review on www.tftcentral.co.uk.
The ROG Swift has only a single DisplayPort input and it won't work with a switcher, so not really suitable to connect up a second PC.
Between the other monitors to you have to look at features like built-in speakers if you want these.
Some other models you might want to look at:
BenQ BL3200PT
Dell U2713HM