Facility itself is a bit sluggish when turning, but not too disruptive especially, but can go even faster. It lacks a search option for Internet radio stations, which is why it takes a while before one has created a list of Fav. Unfortunately not the last station selected the favorite list is selected in a new turn, but is ok for me.
Also, the coupling with Wi-Fi was a little taste just possible (man reads not the instructions ;-)) because the router just 20cm next to it, I can about the reception issue not comment. For me it was perfect.
Even the couple with an iPad 2, and 4 went smoothly.
For processing, I can only say that the CD drive 1mm sitting further to the right, which does not bother me, although here some exciting.
Unfortunately, my system adopted very quickly after just 15 days, which is why I can assign a star. In other forums, I then found out that this is apparently a serial fault. Whether this has already been fixed, I can not say.
Update: 11/03/2015
After I have written Pioneer whether the device has since been revised, I was told that many tests were made and no problem was found with the power supply. When questioned on what would be the cause of failure of many devices, I got "An intact X-HM72 has to run properly without any problem." as answer.
Conclusion of mine: A defective X-HM72 will not work and Pioneere not coming into my house. Too bad the system was actually quite good as long as they ran.