I have a laptop with normal HDD and CD drive. Needing the HDD for storage but want speed for browsing or others. What is the realistic 'minimal size' of the SSD to make a difference (used in the CD drive space)? No games, no photo/video editing, MANY tabs on chrome browser. SSHD any good? Any suggestion on size and brand? What to look out (first SSD)? Links if possible, thanks.