Just ordered 2 of the 1TB 980 Pros. Back-ordered I should say. They limit how many you can order and today's limit was 2. Strangely, they were on sale. I have never seen brand new SKUs go on sale like this. The next 4 I purchase will probably cost more.
Decided against the smaller capacity version for technical/longevity reasons.
New plan is to install 3, 1TB 980 Pros on the Motherboard. First drive gets connected directly to the CPU. The two that are connected to the motherboard chipset will be in a RAID 0 striped configuration. That will create a 2TB drive with twice the read and write speed. I will just have to live with only 14,000 MBps reads and 10,000 MBps writes.