Solider router ... to my cable modem

After sporadic WiFi issues a D-Link DNS DIR645 and update issues a Netgear AC1600 in combination with the cable modem BW
(Both mistakes could be dissolved only by resetting to factory settings for a short time), I finally found a router that works reliably in 24/7 operation.

Features that were buying decision for me:
- Gigabit WAN / LAN
- Simultaneous Dual Band AC operation 2.4 GHz / 5 GHz
- Full IPv6 Support
- USB3 interface
- Good performance (high data rate) and settings

Anyone who has ever done a router setup, should cope easily with the basic settings of the Asus.
WAN and WLAN settings are quickly adjusted using the 'Quick Internet Setup'.
Manual fine settings of the DHCP server, WLAN and the guest networks (up to 6 with different permissions) do not represent a hurdle for the ambitious user.
Many additional features (which can not be taken for granted in this price range) are described in detail in an online guide.
As with many current devices also only a brief setup guide is supplied in hard copy.
The Wi-Fi coverage is perfect in our 110 sqm apartment, full signal strength in all rooms (the router is not centrally positioned).
Even in the outdoor area (~ 20 m environment) is given a very good reception.

Review:
+ Easy 24/7 operation with a cable modem BW (100 Mbit down / 5 Mbps up)
+ Gigabit WAN / LAN
+ Simultaneous dual-band operation 2.4 GHz / 5 GHz
+ High data throughput (up to 1200 Mbps Wireless AC remote sites provided)
+ Good WiFi signal coverage
+ Up to 6 independent Gastnetztwerke with different privileges
+ Dual WAN function (possibility of a second WAN connection via USB (3G / WiMax) or LAN for failsafe or load balancing)
+ Free Asus DynDNS Service (access to the router from outside. This requires full dual stack mode, no Dual Stack Lite, as he is often awarded at Kabel BW to new customers)
+ Built-in VPN server! (Access is from external to its own network. Prerequisite full dual stack mode)
+ Built-in VPN client! Relieved me immensely to access the corporate network.
+ WPS and WIFI on / off button
+ USB 3 interface (network storage / streaming, Printer Sharing or dual WAN function with 3G / WiMax USB modem)
+ Download Client for NCB, Torrent, e2dk, magnetic, FTP and HTTP (storage on USB mass storage ansgeschlossenen without running PC)
+ ...

o Status LEDs of the Ethernet ports illuminate in the dark pretty much the wall behind the router.
Either I never noticed, or all my previous router had not installed ports with status LEDs.
Since the office also serves guests to stay, some have the Geblinke bothersome.

Conclusion:
Much router for the price. He has a decent data throughput and features usually found only in the higher price ranges.
Most important for me is that it easily works with the modem of my cable Betreibes.
Buy recommendation!