Mine is DIY as well, at least on my own case.
I had not yet finished shrinkwrapping the cable yet, and I have since reomved the two lower fans. All in all it's very quite, and sits around 21~22c for the most part.
This is my third generation cooling project, first two were based on the Koolance system, just too many fans in the end, and I wanted a system more contained to the inside of the system. This system is almost entirelly sourced piece by piece from Danger Den, and of my own design.