My motherboard has only SATA II ports. Should I get a cheap SSD for now (Kingston,adata) or go for the better trim,higher speed and more reliable 840 EVO (15€ more expensive)? I know SATA II will be saturated when dealing with compressible data but there are no other compromises. Also, I'm planning to get 120GB for my OS and a few games. What do you guys think?