So i've put these 2 together. My budget is £850, so there's a whole lot of room for improvement, particularly in the Overclockers build. It seems much better value to me so far:
Overclockers (£734):
PCS P209 RGB MID TOWER CASE
AMD Ryzen 5 3600 Six Core CPU (3.6GHz-4.2GHz/36MB CACHE/AM4)
ASUS® PRIME B450-PLUS (DDR4, USB 3.1, 6Gb/s) - RGB Ready!
16GB Corsair VENGEANCE DDR4 3200MHz (2 x 8GB)
8GB AMD RADEON™ RX 580 - HDMI, DP - DX® 12
1TB ADATA SX6000 Pro PCIe M.2 2280 (2100 MB/R, 1500 MB/W)
CORSAIR 550W TXm SERIES™ SEMI-MODULAR 80 PLUS® GOLD, ULTRA QUIET
Overclockers (£734):
- Kolink Bastion Mid Tower
- ASUS B450 Plus Gaming
- AMD Ryzen 5 2600
- Corsair Vengeance LPX (2x8gb) DDR4 3000
- Gigabyte Radeon RX 590
- WD Blue M.2 2280 1TB
- Raijintek Themis CPU Cooler
- Seasonic Focus 550w 80+Gold Modular
PCS P209 RGB MID TOWER CASE
AMD Ryzen 5 3600 Six Core CPU (3.6GHz-4.2GHz/36MB CACHE/AM4)
ASUS® PRIME B450-PLUS (DDR4, USB 3.1, 6Gb/s) - RGB Ready!
16GB Corsair VENGEANCE DDR4 3200MHz (2 x 8GB)
8GB AMD RADEON™ RX 580 - HDMI, DP - DX® 12
1TB ADATA SX6000 Pro PCIe M.2 2280 (2100 MB/R, 1500 MB/W)
CORSAIR 550W TXm SERIES™ SEMI-MODULAR 80 PLUS® GOLD, ULTRA QUIET