I'm about to buy my first MacBook and I really don't know much about apple's peripherals. I'm hoping to pick up some extra stuffs for my MacBook from the Black Friday sale. Just wondering if the time capsule is basically a AirPort Extreme with a hard drive? Does the time capsule have any advantage over running AirPort Extreme combined with a 3rd party external hard drive? Is time capsule's own hard drive faster than those WD or seagate drives in the $100~$200 range? Would I be better off getting the AirPort Extreme and going with an external hard drive with bigger capacity? Thanks!! Really appreciate your help!