I think the only advantage to a TC is it's design profile. If it is located in a very visible area, like a desk or with a TV, etc, it looks nicer than an AEBS with a few HDD's hanging off of it (along with all the USB cables, power bricks and cords). If you don't mind a little more clutter, I think the AEBS w usb-HDD is a very good option. At least, if either the router or HDD dies, you only have to repurchase half the system.