Heroichi or HEC PSU's are much more common in Europe. They are consider reliable, I've had good experiences as many other people as well. As for quietness, I'm used to the noise of HEC 350W LR-PT model, it's much more quieter than a Fortron PSU for example. There are also new "silent" models. The 30...

There is a thing called ACPI(Advanced Configuration and Power Interface). If your motherboard, bios and operating system supports it and the HLT(halt) command, it will tell your CPU to go to "sleep" while idling. It could be that your SB Live somehow disrupted it.

I would like to see you to test "normal" PSU's which aren't marketed as silent. How much noisier is Antec basic models compared to Truepower etc.