A lot of problematic threads in this forum - I want to lighten it up a bit!
I had about 11GB of video I need to encode to play on a TV that I needed to move from my laptop to my main desktop to do the actual encoding on. Usually over wireless I'm looking at a pretty long wait and I generally just end up digging out an extra ethernet cable and doing it over wire.
I haven't needed to do a large sustained transfer really yet with the RT-N66U...except for today. I figured, why not?
This is on the 5GHz band, in a room across from the router (separated by two walls), using firmware 188.8.131.52.260. It took about 7 minutes to transfer it. The client is a 2011 MacBook Pro running Windows 8 under Bootcamp.
I've owned routers that promised and were reviewed to have excellent wireless performance and have really let me down on that front. I am utterly shocked by how fast that transfer went with the RT-N66U, however. And it looks like Asus is continuing to add useful functionality through updates!
It might've been one heck of an expensive router, but it's sure worth it.