Linksys WRT1900ACS review: The best router for most router enthusiasts

In April 2014, the Linksys WRT1900AC was the fastest 802.11ac router I'd ever tested. And I made a point of including that date in the 'At a Glance' part of the review for two reasons: That information is displayed almost as prominently as the headline in our reviews, and the router market was moving crazy-fast back then. It still is. The latest version of that router--the WRT1900ACS reviewed here--is an incremental improvement, having gained a speedier CPU (running at 1.6GHz, versus 1.2GHz in t...