I was aware with concept of ssd but i haven't used any till now. now im building a new cpu so ill get a ssd. i thought ssds look like traditional hdd but today i found out the m.2 ssd(looks like RAM) and some ssds used to look like a traditional hdd few years ago. Now im completely noob but i guess the ssds that fit in m.2(those which look like RAM) slot are latest and best thing. Still i need suggestion cause when you buy you expect to buy a best thing. so what is better? and what will give me value for money, good reading, writing and boot up speed? (just googled) 2.5"ssd, msata ssd, m.2 ssd, pci-express ssd???