1-2 years ago I spent a lot of time researching water cooling components. However, I am not updated on the new stuff and what currently is regarded as best performing.

Now I am ordering a WC setup and don’t have that amount of time for research. I have googled a bit, but still need some input.

I numbered my questions to make it easier. Please use the number when replying. Any input is much appreciated. Thanks

Radiators:
I want a Quad rad for slow fans, and preferably with low waterflow restriction.
XSPC RX480 vs. ThermoChill 120.4 vs. Feser X-Changer QUAD 480 vs. other quads.
1 - Which is better?
Based on this German test I found, XSPC RX480 seemed like the best alternative with best performance with slow fans and pretty unrestrictive, but I don’t know how trustworthy that test is.
2 - Are there any quad 140mm rads on the market?

Pumps and pump tops:
I know the MCP355 is regarded as the best performer with an aftermarket top. However, I want to build a silent system.
3 - Would I be better off with a D5 Vario or MCP350, or are the noise differences too small to worry about?
4 - Are there any good D5 aftermarket tops available now? If yes, how will it compare to the best MCP355?

In regards to the MCP355 tops, I have noticed that the EK X-Top Rev 2 has outperformed the XSPC top.
5 - But is it also better the the XSPC Res top?
6 - Would the pump with a Res Top mounted be more silent then with a normal top?

GPU block:
I don’t want a full cover block. I noticed there is a Rev.2 of the Swiftech MCW60.
7 - Has the performance improved, and is it still as unrestrictive as the first edition?
8 - Are there any other alternatives that outperform the MCW-60?

Chipset block:
I’m building a LGA1156 system. The memory controller and PCI-Express are now moved to the CPU, which should mean the chipset would run cooler than before.
9 - Is it even necessary with a chipset block?
10 - Is the Swiftech MCW30 still the best in terms of performance and unrestricted flow?

Other:
11 – What are the best performing barbs?
12 – Which tubing is recommended in terms of quality vs. price?
13 - Silver KillCoils vs. PT_Nuke vs. others. Which works best?