Costs less than what you would have to pay for "Sennheiser's" rackmount plus BNC cables. A big plus.
The only gtipe i have with it is the fact that it takes a whole rack space thus forcing you to put the wireless receiver somewhere else in the particular system you have. I have enough space, but someone else could use it for something different. You could put the wireless system on a tray behind it, but I like to see it's display, so I had to put it under the rackmount, on a separate tray. It gave me some space to put some cables and electric instalations for the rest of my rack, so I don't mind it.
Good product that will do exactly the same job a more expensive and elaborate rig would.