Asus introduces its pre-draft 802.11AC router: the RT-AC66U. It's the only pre-draft 11AC router so far, to utilize external antennas, a plus for range, because the RT-AC66U sustained the best throughput at distance than any other pre-draft 11AC routers tested to date.
Excellent range; Top performing router at 5 GHz N, very good in 11ac mode; Advanced features; Business-class capabilities
Some sluggish performance in the interface; Connected clients lost Internet connectivity a few times