Hi so um i have been using 2.5" SSD's since August of last year (because before that i was using Hybrids for the OS and games) and i was looking at the WD Green and Blue M.2's and was wondering which one would be pretty good for just the main OS since they are 240gb/250gb and another thing is the heat thing i hear about and my case has 6 fans in it as well (4 intake 2 exhaust) so i was wondering if i do buy a M.2 if i should also get a heatsink for it as well and thanks if you are able to answer these questions for me.