I have a 2011 Macbook Pro that I am trying to get the best possible performance and hold onto it as long as possible. I have 16GB RAM and a Seagate 1TB HD/SSD hybrid drive. Do you guys think I will see a dramatic enough improvement in performance with a 1 TB SSD to justify the cost? I was thinking about an 850 Evo or even an 840 Evo to keep my cost down a little. My HTPC's and my main PC use 840 pro's but since I want to use the drive as my main storage on my Mac I want to go 1 TB so the cost needs to stay down a little. Or do you guys think it would be good to use one of my 840 Pro 256GB drives that I already have and then install my apps on an external drive? I don't think that will be the best way to do it but I am open to suggestions.