Hi AllanJames,
I think I can help you as I've been doing some research recently, before I bought what I've got now.
A simple and easy answer : Cisco Linksys N (WRT120N). One doesn't have to work in the IT to know, that they are one of the best, and most serious network hardware vendor around. They just decided to give it a go on the small business/home market so they came up with this. It comes with or witout a built-in ADSL modem. I bought it in
DickSmith.
IMHO you should avoid Belkin routers, they are low-level, and heir firmware is cr@p, too. The support guys were very helpful and friendly, but couldn't solve the problem so I had to send it back...2 times....
If my understanding is correct, you don't need an ADSL modem as you already have one....If you do, just buy the one which has it built in.