Well, never thought of that, is nvme worth it? I'm not really heavy gamer. My purpose is to build PC for programming (web development).Neither...?
Jump straight to an NVME 1 TB for only $109 with Intel's 660P....(you can add a 4 TB HGST storage drive later for $120)
If you intend to install any games such as BF1 or BF5, the 240-250 GB SSD just does not go very far any more...
(A 250 GB SSD is still plenty adequate for WIndows/Office/surfing, however!)