I am going to buy this over the new t/ntMBP, I am looking for reassurance. Tell me is it still fast or is it showing age with newer software? Any one runs parallels? How good does it handle Windows 10? How long do you think this laptop will be sufficient for you until you need to upgrade again? I did it a lot of research and read about benchmarks and it seems the newer one is only faster by 10-20% max depending on which specific CPU you compare. Intel with their retarded branding makes this very confusing to figure on your own.