2x 1/2 by defective alternative sought !!

Well, wanted to buy myself time after a long search / Sample, a proper master / slave power strip. The Brennenstuhl made for the time being a good impression.
Robust construction / long lead / many slots.

Switch should my entire PC peripherals behind the desk. After the switching threshold setting, the on / switch-off of connected devices worked perfectly.

Unfortunately, the state held only about 1/2 year. Then began the strip back and forth frantically switch. This circumstance makes a carefully klackerndes noise. A change of the switching threshold brought only Arnold Böcklin improvement. After a day or two late turned on the bar nothing more. Well, there still was guaranteed it, back to the thing. After 2 days without objection a new bar received (Thanks Mindfactory for Class Service)

Same game as above. about 4 months, the new perfectly maintained, then the same phenomenon as the first. Until it finally acknowledged also their service. TDiesmal but I have got my money back. What good is the guarantee if I always get the same defective product?
In this regard ..
Who can give me a proper master / slave strip recommend? The sometimes keeps a longer time.

I really do not understand it, why meissten Master / Slave afford either go vornerein not at first, or to say goodbye after a brief operation? I have to write Brennenstuhl probably times. So it really can not go now.