Out of curiosity, what router did you use?
I used a DLink DIR-655 on my cable modem and one on my DSL modem (backup network) and then three more of them as wireless access points -- it's a big house with a guest house and I wanted seamless roaming coverage in the house and on the patio around the pool. It's a great N router and it is pretty inexpensive, but it is not dual band if you need that now.
I just liked the idea of using a separate router that I could change without getting another modem.
I'm really waiting for 801.11ac draft routers late this year or early next to upgrade my networks (the current 801.11ac stuff is not quite ready for prime time IMO).