My top recommendation is still the Crucial P2 1TB 3D M.2 SSD, a drive that makes it to the top of the list because of its affordable price, excellent performance, and high reliability.
Crucial BX500 1TB Internal SSD for $58.59 ... saying that the 990 EVO was "an excellent-value mainstream M.2 internal SSD, with whizzy performance and the class-leading warranty, software ...