I've read through the thread as well, and think this the current status is:
- Make sure you have updated to High Sierra on the original Macbook ssd, to ensure latest firmware has been installed
- Get the Sintech adapter
- Apply the heat resistant tape (kapton tape) to the pins on the chip that is located on the adapter
- Install adapter and SSD
- Reinstall High Sierra
If you don't want to upgrade to High Sierra, you need to:
- Get an SSD that supports 4k blocksize
- Apply the heat resistant tape (kapton tape) to the pins on the chip that is located on the adapter
- Install adapter and SSD
- Boot in to linux from an external drive
- Format the SSD with nvme cli tools and set blocksize to 4k
- Reboot and reinstall MacOS
The SSD you have listed seems fine, and think it's been used before by users in this thread. As long as you are updated to high sierra, you should be fine. not sure if the 960 Pro supports 4k block size. I dont have one, so cant check for you.
I have the 970 EVO and it does NOT support 4k block size.
Not to sure about sleep problems, someone else might be able to shine some light on that. I haven't tested sleep on my machine yet.
In benchmarks the Intel SSD seems to have lower performance compared to the Samsung SSD. I guess it's up to your wallet If you want to experiment with the Intel SSD (appears to be a bit cheaper) or go with the "proven" Samsung SSDs.