This link may help you make a decision:http://www.pcworld.com/article/2050761/netgear-nighthawk-review-this-802-11ac-router-sets-lan-speed-records.html
Personally, I like the Asus brand. I have had Linksys, Belkin, Netgear and the all failed after some time. Mabey it's just my luck.
Currently I have 2 wireless printers, an IMac, 2 Windows PC, 3 networked sony Tv's, 2 networked sony Blurays, networked cable box, an actual NAS box, 2 security camera, 2 Laptops, 2 IPads, 2 android phones and my network has always been very stable. I don't use the USB on my asus router to connect my hard drives for remote access. I just use the VPN feature of this router to remotely access my Network Devices. The netgear reviews looks very good but If I were to buy/upgrade my router I would choose Asus.