Been using Apples' Airport Time Capsule and Airport Express set-up since 2007 (and updated in 2013) and never had any problems. Bought the Express in Aussie as our property there was all double brick walls, don't really need it here in NZ but use it anyway connected into my old Sony STR DB-790 amp for iTunes of the iMac. Of course the Time Capsule is just brilliant for Plug-&-Play & Forget Time Machine backup device.
There really is no decent third party router with built-in hard drive so that ease of use back-up ability is gone. They have missed the chance to seamlessly connect their Apple TV & new the HomePod (and everything they want to develop this into re home automation) together using WiFi for the internet streaming and AirPlay to again seamlessly connect your other Apple products (iPhone, iPad, iMac & MacBook) and of course using the latest in Mesh multi node, MIMO & MU-MIMO technology.
I think this decision is very short sighted. For a company who wants to be all things in your home ecosystem where everything just connects together seamlessly externally & internally in your home and just works, then dropping this product makes no sense.