Instead of writing stories about the ASUS (RT-AC68U) Wireless-AC1900 Dual-Band Gigabit Router I will give my honest opinion. I have been using the above mentioned router for the past two months and am happy to say that this is one of the best around.
Since it is dual-band I use the 5 Ghz mostly for gaming along with my friends, and use the 2.5 Ghz regularly for internet. 1.3 Gbps on 802.11ac is a nice catch here since it is powered by a dual core chip there is no loss in performance whatsoever.
I stream 4K videos to my Smart tv with no lag or stutter. The highest speed i managed on a regular basis was 1800 Mbps over 802.11 b/g/n. The ASUS (RT-AC68U) Wireless-AC1900 Dual-Band Gigabit Router also has a USB 3.0 port to which you can connect storage media and use it over wifi, I personally use a 64 GB Sandisk Pendrive to store some pics and stuff. Overall this is a bang for the buck product.