Straight from the review.
lextor targets the gaming market with the M8Pe series, but most users shop based on price rather than some type of misaligned category designed to classify and group users together. There are several premium priced products in the 1TB capacity, but only a few break the existing pricing structure to deliver a product with more value. At this time, there are two products that meet these parameters, but only one is actually shipping. The Samsung 960 EVO 1TB will retail for $470.99, but it doesn’t have a firm release date. The Plextor M8Pe sells for $414.99 to $429.99, and it is available now.
Plextor managed to undercut Samsung's pricing this round with MLC flash. The 960 EVO uses TLC flash, but Samsung’s 3D V-NAND delivers MLC-like performance during many consumer workloads. The application tests show the M8Pe outperforming the 960 EVO under light use conditions. That accounts for a majority of typical user workloads. In the end, the Plextor M8Pe is a better product for many users, it’s already shipping, and it costs less.