Great to hear that you have good experiences with your new router!
Have you done any real-world testing?
The AirPort Extreme looks very slick, but still I get quite discourage from buying it, when I read the cNet article. The fact that Apple has decided to limit its possibilities in such a degree, that it really only works with Apple products. E.g. the only formats supported on any USB-drive that you connect, is NFS+ and exFAT. NTSF is not supported at all. Maybe not that surprising, but still, I would think that it is more important to allow for some cross-platform usage in routers, then in computers...
Dude, that had to be crazy expensive!

Why did you need so many? How are your experiences? Have you done any real-world testing?
I briefly thought about the 2TB Time Capsule, for the exact same reason as you, but since I'm converting my old desktop into a FreeNAS, I will have all the storage capacity in the world to both set up Time Machine, for computer backup, and use the rest for regular NAS
I love to bring up the fact that I'm very lucky to live in Norway, because of our 5-year consumer protection. This applies for all store-bought products, both physical stores and internet stores!

This differ from "Guarantee", by the fact that it is a law protected consumer right, and not an offer from the manufacturer. The manufacturer guarantees are very often quite limited, and basically revolves around the idea that the manufacturer is so sure that their product will not fail in their chosen areas, that they are willing to offer a guarantee.
Actually our consumer protection is so beneficial for the customer, that multiple companies, including Sony, Samsung, Nokia and Pioneer, sued the Norwegian government!

They meant that it was totally unrealistic to demand that a cell phone has to work for a minimum of 5 years, even if the owner is careful. Of course, if you smash your phone into the ground on purpose the consumer protection does not apply, but as long as you don't handle the product differently from the manufacturer guidelines, your good for 5 years
Maybe an ASUS Router would then not be such a big risk?
These are some specs, compared between the "Asus RT-AC68U Dual-band Wireless-AC1900 Gigabit Router" and the "Apple AirPort Extreme Base Station":
ASUS/Apple (Sustainable real-world speeds)
802.11ac, 5GHz (15ft): 521.4Mbps/287.2Mbps
802.11ac, 5GHz (100ft): 336Mbps/204.6Mbps
802.11n, 5GHz (15ft): 202.8Mbps/202.3Mbps
802.11n, 5GHz (100ft): 176Mbps/132.1Mbps
802.11n, 2.4GHz (15ft): 225Mbps/79.4Mbps
802.11n, 2.4GHz (100ft): 211.4Mbps/38.4Mbps
Link:
http://reviews.cnet.com/routers/asus-rt-ac68u-dual/4505-3319_7-35828165-2.html
Actually, now that I have summarized the specs, it is quite more clear which router offers the best performance. When the prize is about the same, I think the ASUS gets the advantage. Still, I have to admit, the Apple Extreme Base Station is much more sexy
What do you guys think?