The Samsung is likely the best. I used the OWC Mercury EXTREME Pro 6G when I did mine. I will say that it works really fine... except that OWC came out with a firmware upgrade for this SSD, and their upgrade program and method for my 2011 imac doesn't work. Still waiting for a resolution from them on this issue. (OWC states the firmware is recommended, but not required. But, I like having the latest firmware on such things)