The AC-PRO covers my entire house (2 story, 2500+ sqft new construction) and garage with no latency issues or dead spots. There's no handoff issues like having multiple APs/extenders, there's a faster throughput than I was getting with the Nighthawk, and the PoE made it a breeze to install centrally in the house.
I'm only upset that I waited so long to just give up on the purely 'consumer grade' crap.
Also, the linked article is wrong. The iphone app is more than adequate for simple home setups (no crazy java pc installation required while you're up on a ladder / in the attic installing it). It wouldn't surprise me if they have a comparable android app. Didn't check.
Also Ubiquiti are launching a new mesh networking product this month.
If you need a router functionality, get there edgerouter but I'll tell you this, it's super powerful but not something easy to figure unless you have a deeper understanding of network protocols. Great stuff.
You don't need Java to work in the browser. The management tool runs on a Tomcat webserver. That requires Java. I don't know if you need to install Java to get that working, or if Java is included in the tool itself. But you don't need the Java plugin in your browser for the tool to work. To test this, disable or remove the plugin and see if the management tool keeps working!