You do realise that sustained high throughput is almost irrelevant in most home situations where you burst download data more than you stream it?
I would honestly rather have 3 AP-AC-Lites and fabulous coverage than 1 AP-AC-SHD and poor coverage.
And even if you are streaming, most websites can't supply data as fast as your internet connection can accept it. So, in my case, my office has a 2Gbps symmetrical leased line but I can only upload at 85-110Mbps so their line effectively runs at whatever I can send it. As far as my use-case is concerned, 1.9Gbps capacity is wasted.