The only online store convenient for me was:
http://www.amazon.de/Sharkoon-SilentStorm-Gold-PC-Netzteil-Kabelmanagement/dp/B00W4IVXFW/ref=sr_1_1?ie=UTF8&qid=1453401879&sr=8-1&keywords=sharkoon+silent+storm
Update 1: Received the Sharkoon SilentStorm SFX ... and man silence has come finally. Even under Furmark load I need to check my computer to see that it is actually running. Very happy with it.
Hey I just want to share here my ... unfortunate experience with this PSU from Silverstone.
Lately I wanted to rebuild my current HTPC by switching the GPU (GTX 750 TI) with a more powerful one (GTX 960 4GB) and hence a new case and more beefy power supply was needed. After an intensive research...