I've always found netgear ones to be the best, probably not the cheapest though

Airport Extreme is the router, you just need a ADSL modem to plug into it. Might be a bit cheaper than buying a second router.
Was just writing exactly the same thing. Airport Extreme is a router, but doesn't have a modem. Just need a ADSL or cable modem and plug it in.

And another. I've had several of these, all trouble free.Another vote for Netgear DG834 series.