With us the Comag for a few days running next to an existing HD receivers Kathrein UFS 910 on a Sharp full HD LCD 47 "without problems. From the reviews we saw many problems arise, but we can not confirm. We have made previously on the Comag page with the operating instructions and notes on the special and have had to make the device, what it should do. After delivery and problem-free quick connection the update and the tuning went from about 45 minutes without any problems, then were immediately all HD and HD + stations because, in excellent quality, well-ordered, the HD channels and especially the sound quality emotionally slightly better than the (expensive) Kathrein. You can even use both receiver parallel to one LNB, so for example with a record and look at the other another program. For this but you should populate both antenna cable behind the turnout with one amplifier. And another tip, claimed at least for our receiver-combination: first switch When you turn the Comag alone, otherwise he is sometimes, not always, an error message due to low signal strength. Only when it is running, the 2nd receiver to turn and everything works like clockwork. Various USB sticks and a 500GB Verbatim hard drive were immediately recognized, both FAT32 and NTFS, the trial record and replay worked on all media. When EPG and the timer recording, we are accustomed to our Kathrein, see this graphically beautiful and faster to use. But that's a matter of opinion and experience. All functions are available, graphically more casual and the Comag, but straightforward to operate and adjust. The operation is self-explanatory, in principle, does not require any manual. This is the way in detail, with color photos and Gaphiken, German, as you know them from before. The switch-on after disconnecting from the power supply does not take minutes, but at most about 15 seconds. Switching on and off of the receiver together with the 500 hard drive running at us through a switchable Dreifachstecker; no standby, always on / off. Only to record standby. We can recommend the very Receiver, the price is unsurpassable, the free processing (German manufacturer) is error-free and high quality, the dimensions are small, the device fits fairly inconspicuous in the rack. Recording and playback of HD + without any complaints. Therefore, 1 A and 5 star.