Originally Posted by Due

I use the ASUS RT-AC66R as well as the Apple Timecapsule at home. The TM is the Airport extreme with a build in HDD.

I noticed that my timecapsule would often loose wifi signals / drop connections when the network was busy, I suspect that the CPU can't handle the DHCP / Nat tables or its an issue with the WIFI part of the router.

I disabled DHCP and WIFI from the time capsule and have it setup to connect to my network through a Linksys range extender. Its connecting both my kids computers to the internet acting as a switch.

Since it's running in switch mode I can still access the disk for my timemachine backups.

The RT-AC66R router seems to have the option to install various apps such as p2p software, vpn server, cloud stations, dlna/itunes servers and probably more to come as it seems to be app based.

If you wanna stay ahead of the technologies go with the Asus router.
Unless you connect 100% apple products to the router I probably wouldn't choose Apple.

P.S. Using and preparing the disk drive in the Timecapsule seems to be a lot easier than preparing and using USB disk drives in the Asus router