The difference in speed is amazing as compared to my previous WNDR3400 Netgear Wireless N Dual Band router.
I am however considering returning the RT-AC66R in anticipation for the release of the newer RT-AC68U. I am currently using Comcast's BLAST service (advertised 50 Mbps).
Is it worth upgrading to the RT-AC68U? What is your experience with AC routers?