Don't go cheap or you'll risk a cheap panel which reflects on the image quality. If you wanna use your pc on a 4k tv, wait for HDMI 2.1.
I went with 2000€ minimum.
Intel Core i7 8700K | 32 GB DDR 4 PC 3200 | ROG STRIX Z370-F Gaming | RTX 3090 FE| Asus PG27UQ gaming on 3840 x 2160 @120 Hz GSYNC HDR| HTC Vive Pro :3
Reached PC master race level.