So far, it works super / Update

The devolo cockpit displays about 250 Mbit. The Wi-Fi worked for me so far no crashes. Have a different SSID used as Fritz box, and of course other channel. With devolo I am extremely satisfied overall.
The support confirmed to me that probably no such wireless version of the 650 line longer comes out, because it is developed on the 1000 series. But I wonder if that then can join the power lines also, after all, I currently "only" 250-290 Mbit instead of 500 ..

But as I said, the product itself is great. On the 3 LAN ports I could do without, but it's great that the outlet is retained.

Update 7/2015:
Meanwhile, there are now some time problems with some devices, which drives me almost to madness. While having my Macbook Pro garkein problem with wireless connection to the adapter. Show iPhone 6 and iPad Air Although full reception connect, but only briefly to the Internet. Pings with various Apps work, but also with googles 8.8.8.8 nameserver load any pages on mobile devices.
The crazy thing: My wife with iPhone 5 has no problems ...