Any known issue with Tunze Nano WaveBox?

[Duce]

I am about to take the plunge and get one of these...
Any known issue with these units?
My first Tunze purchase was the nano stream and we all know their reputation so I am once bitten already...
To me the WB is a big purchase so I want to make sure I spend my money wisely....

 

[GSMguy]

they work.

the nano stream does too now.