The Tech Report published a review on the Clash of the terabyte titans: Crucial M500 960GB vs. Samsung 840 EVO 1TB

A quote from the article:

Despite the fact that they both sell for over $500, the Crucial M500 960GB and Samsung 840 EVO 1TB are relative bargains. These SSDs have the lowest price per gigabyte around, and they're very different drives. We've pitted them against each other in an epic clash of terabyte titans.

 Clash of the terabyte titans: Crucial M500 960GB vs. Samsung 840 EVO 1TB @ The Tech Report