Which monitor would best compliment my new graphic card

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As above, built a new Pc as old one was just a few years of age always loved nvidia/intel but this time i went with amd ryzen 5 3600 and an amd radeon rx5700 xt.
Currently i am hooked upto a dell U2515H monitor which i have at 2560x1440 resolution with a refresh rate of 60hz, everything looks the same as my old pc nothing popped out of the screen to punch me in the face (old pc is a gtx970) so am thinking maybe the monitor needs an upgrade.
due to space limitation on custom built desk 27inch would be the max size i could go and could probably aim for £300 ish mark.
what do you suggest

thanks

the only 2 really in my tight fisted price range are

illyama gmaster red eagle

and

acer nitro xf272up

 

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so still open to suggestion's lets take away the £350 budget and go to £450