I've been using be quiet power supplies for almost 10 years, installed on about 4 or 5 PCs. I have never had any problems: the hard drives fail before the power supply :-).
The modularity is always a plus: no need for all those useless cables tied together.
I recommend 3 times rather than one.

I am also a fan of this brand. They make good material.

I have mounted many power supplies... the be quiet is of very good quality!
It is modular... you can power 2 graphics cards.
For the 1st graphic card the 2 connectors are grouped into one at the level of the power supply.

I recommend it with my eyes closed! Never had any problems with this brand