Which one should also mention that you can get all that in a standard consumer wireless router, but it'll cost at least 2x that of the Unifi AC model.
I'm in the planning stages of a new network setup in my house, and I'll be ditching the standard router and wifi package and will be building a Sophos VM (firewall and router) and will simply wire up that Unifi AC Lite model.
I'm looking at affordable 12-24 port managed switches, and I might even find myself getting one of the Unifi switches for my network. I'd like a Cisco to get more practice in Cisco's iOS, but for the most part it's only a matter of syntax, and many places use the wide gamut of switches (be they a Dell shop, Juniper, HP, Cisco, or whatever other brand). And with that in mind, I'll just be grabbing the most feature-complete but affordable and low-power switch I can get. I'll probably just buy a stand-alone PoE injector for the Unify AP so I can ensure everything is running as low power and quiet as I can get it.