Range and transmission power are compared to other routers from other manufacturers will not increase.
But more bands available (important in the city).
Antennas aligned for better reception / transmission.
USB 3.0 has sufficient power over the GHz-LAN also afloat (HDTV streaming from disk on LAN afloat). About WLAN ansich not necessary because the wireless power with me after one or two walls belonging subsides (approximately 20 to 30 dB) and then only max. 30Mb / s go over there, so USB 2.0 speed.
Now for the negatives.
Only 4 Gb connections via LAN (not just acceptable, you only have computers, printers, Devolo and television on it).
No integrated modem !!! Having a suitable modem, has become very difficult.
No VOIP support. So nix phone on the router.
If you have T-Home Entertain, there is no TV on it (IPTV). Amazon, etc. no problem.
Otherwise a top unit, No allerlegende Wollmichsau, ala AVM, but as "specialist" in its areas very well.