Best Home Wireless Routers for Spring 2015

I know new routers like the D-Link AC5300 DIR-895L/R are forthcoming with faster processors and more streams, but I wanted to take a look at the home wireless router market as it stands today and size up what I think are the best routers for specific uses with an eye towards firmware capabilities and ability to track network usage by-device over time.

Nearly all vendors fail on this, but TP-LINK provides it, ASUS comes close, and ASUS with DD-WRT and YAMon provides it really well for the R7000.

I'm interested to see if there are any devices I'm missing. A nice MIMO 802.11ac device with firmware capability similar to the Pepwave Surf SOHO would be great.