I just learned 980 PRO is actually using TLC NAND chips... ("PRO" does not mean MLC NAND anymore)... I can imagine current 970PRO and 860PRO models becoming the last ever consumer grade SSD that uses MLC chips. I feel that eventually we may see DRAMless QLC drives become PRO real soon.. A deja-vu of how CMR drives became such rare thing to come by, so quickly...