So I understand that 300 mbps speeds are only capable under dual-channel settings, and that most "N" routers operate under single channel settings around 120 mbps or so. My question is this: I have Comcast "high speed" cable, which is advertised with "download speeds up to 12 mbps", and currently run a linksys G router in my house, which is capable of the standard 56 mbps, so would I see any performance gain from wireless N? Looking at the numbers, it appears my internet connection wouldn't be fast enough to support it, but I am unclear whether "download speeds" is different than my regular connection. AND plenty of people use Comcast, aren't they gaining faster internet with N routers? Any clarification is greatly appreciated, I just wanna get my iMac humming at peak efficiency Thanks everyone.