I have a macbook pro 2011(early) i7 2.7GHz , 16GB ram, samsung 850 evo 500GB SSD. I want to swap out my optical bay for a secondary HD but have a few question. The first question is if I replace the optical bay for a secondary 500GB SSD, would it really increase the performance? Or it would be a waste of money?( I feel like after I upgraded to a SSD, it it already extremely fast) Or should i add a 1TB HD which would give it more storage space plus it would cost a lot cheaper. Also any good recommendation for a data doubler optical bay. I'm from Canada so I normally shop on amazon for these things but not sure what brand should I buy.