RX 580 is a good choice, I got my new MSI Armour RX OC 580 8 GB for 14500 locally in August. Works well at 1080p :)
You can also look for RX 5500 or GF 1660 as previously suggested under 20K.
If your budget it less thn 12k, I definitely recommends used RX570 or RX580.