Crucial MX200 250 GB @ techPowerUp
 

Crucial's new MX200 SSD is able to utilize portions of the flash capacity in super-fast SLC mode, which makes it the fastest SSD we ever tested. Once the disk gets fuller, the drive automagically switches to MLC mode, block-by-block, all in the background, so you can maximize disk space usage.

http://www.techpowerup.com/reviews/C.../MX200_250_GB/