As the title says, I have had this drive for a number of years now, and it's served me very well. However, I'm itching for an upgrade. A friend wants to buy an SSD to upgrade from his old' mechanical drive and doesn't mind buying mine, so finally a reason to upgrade! I'm justing looking at Samsung right now mostly, so what's the difference between the 840 Pro or EVO? Will I see a huge upgrade coming from my G2s?