I'm looking for a ssd for my old pc having 2nd gen core i5 and 8 GB of RAM (max 500 GB). But i'm wondering whether i should go for more speed or more storage? Cause i do not want to spend too much for small storage and i'll have to replace my sata hard drive as there will be no more space left in my pc unless i get a caddy. So advise me something that's fast yet not so expensive. Some of the sata drives i'm looking at are: Kingston A400, UV 400, Crucial MX 500, Sandisk SSD Plus, WD Blue and Samsung 860 Evo. A speed comparison or order would be much helpful.