I wouldn't consider the Crucial its to slow. I have no information on the Kingston. For your RAM, you could pull the accessible 4gb and put 2x 8 or 16GB, insure you match the Voltages and Timing of the 2 sticks you can't get to they have to match.
Nearly all user here are using Samsung 951 is what comes stock, some are add on or replacing with 950 Retail version. not saying they wont work just we don't have many users here to evaluate. Someone that may have tried them should pop up and give you an evaluation.
G752VY-DH72 Win 10 Pro
512 GB M.2 Samsung 960 Pro
1 TB Samsung 850 pro 2.5 format
980m GTX 4 GB
32GB DDR 4 Standard RAM
Z97 PRO WiFi I7 4790K
Windows 10 Pro
Z97 -A
Windows 10 Pro