I have a Time Capsule as my main router with a 802.11n (b/g compatible) network, with an Airport Express (802.11g) extending it. I have AT&T Elite DSL ("up to 6 Mbps") and according to both 2wire.com and speedtest.net, I'm getting somewhere in the neighborhood of 5.1 Mbps. When I hook my DSL directly into my computer via ethernet, I get the same results. I ran a few "real world" tests and found that the results I got were pretty accurate. I downloaded a 4.8 MB file in about 7 seconds and a 17.8 MB file in about 30 seconds. So my question is...at what speed does wireless n come into play? I'm getting close to the highest speed AT&T offers on a network that is, for all intents and purposes, a g network.