When I built my recent computer almost 9 months ago I had a similar problem However mine was choosing a PC3200 with CL14 over a PC3600 CL16. It is pretty close to equal performance. But I chose the PC 3200 because was compatible (on the preferred list from the MB manufacture) with my mother board and it had some very tight timings. G.Skill Flair X PC 3200 CL14. 14-14-14-34
Now in the youtube video you do see 3 Gskill ram sticks. The PC3600 with the tight timings also cost $190 The Flare X costs $100, and the Trident Z is $69. I have the Flare X on my current computer.
My suggestion to you is to see what your motherboard will take without any headaches.
Next how much money are you willing to spend and can you hold off for a few more months... The Ram prices are continuing to decline.
Next could not find CL20 Sniper X
Did Find this.
Buy G.SKILL Sniper X Series 32GB (2 x 16GB) DDR4 2400 (PC4 19200) Desktop Memory Model F4-2400C17D-32GSXF with fast shipping and top-rated customer service. Once you know, you Newegg!
www.newegg.com
And this one.
Buy XPG GAMMIX D30 Desktop Memory: 16GB (2x8GB) DDR4 3200MHz CL16 Black with fast shipping and top-rated customer service. Once you know, you Newegg!
www.newegg.com
If I had to choose I go with G.skill as I have never had an issue with their memory.
I never had an issue with G.Skill in using them in my computers or the computers I build/built for my client base There are plenty of good Ram manufactures but I stay with what works for me. Also because of G'skill Reputation of quality Ram there is a good resale value as well.
In ending
really do your homework for everything you build. Check your MB for which Company that makes their ram that will work easily with it and how much money you are willing to spend? And do you really have to have the Ram now?
These are just suggestions... however good luck with your build regardless.