What I do not understand at all:
For 1-2 K you guys are ready to accept a lot of additional noise of your system. If you do not worry about noise at all, why are you still using standard liquid cooling systems? Chillers would be the better choice I guess.

Like HESmelaugh stated most of the users here in Germany / Austria / Switzerland want to have a cold AND silent system. So chillers (if not in the cellar) are out of the question ...
If I read in Martinīs welldone reviews (thank you!) of "low" fans with 1350 rpm (my fans run with 600 rpm at the most) and I see those recommended pumps I worry about how you guys are able to suffer

Am I wrong?

p.s.: the most german cars with more than 400 HP are only built for the US-market ...