I have a few questions about this new 5 GHz band that the new Airport Extremes and Time Capsules use. First off, will this improve my wireless LAN performance? I have a Time Capsule right now and I use it as a media hub for movies, so I transfer files to it often. On average, it takes around 20 minutes for a 7 GB file. Will getting a new Time Capsule with the simultaneous dual band improve this transfer speed? Also, my next question. If I were to instead get an Airport Extreme and attach an external HD to the USB port, would transfer speeds be any slower than if I were to get a Time Capsule with a built-in HD? I noticed on Apple's product features page for the current gen Time Capsule that it says there are "new technologies" to make the hard drive in the Time Capsule quicker, but I'm not sure how much of that is true. I would rather use an external, but if transfer speeds are quicker with a new Time Capsule and a built-in HD, then I'll go that route.