Which of these 2 SSD should i go for...

[China Jade]

Main use Gaming SSD will contain OS and a few main games nothing else.

250Gb SK hynix SL308:
https://www.scan.co.uk/products/250gb-hynix-sl308-25-ssd-sata-iii-6gb-s-tlc-read-560mb-s-write-490mb-s-100k-85k-iops-oem


250Gb Samsung 850 EVO:
https://www.scan.co.uk/products/250gb-samsung-850-evo-25-ssd-sata-iii-6gb-s-mgx-3d-v-nand-512mb-cache-read-540mb-s-write-520mb-s-97k

 

[PhysX_HW]

The 850 EVO is better, because is uses more durable TLC VNAND.
Performance-wise, they are roughly the same, ie. you wouldn't notice any difference when using them.