My current setup is a BT Voyager 205 Modem and a Netgear... Erm, hang on... I will just check...
Right, a netgear MR814V2 Router.
I can honestly say that its quite simply the pits.
I have NEVER had any Wireless device playing on it, and the internet just slows to a crawl after just a few minutes, and large downloads such as Drivers etc start off at a good pace, ( 200K ish ) but then teeter off to below 1K after a while.
Playing games online is fine on just one PC but when me and my kids try playing together online, we might as well go Dialup.
Previously, I used a BT Voyager 100 USB thingy and I was able to have my games playing silky-wilky even when my server was running MetaCafe, and Azureus and never once had a hitch of any kind, but now... PHART!
Oh, and MetaCafe has an issue with it too that I cant resolve, and that is that it tries to DL a load of Media and then forgets them and I end up with 2 or 3 left, and the only way to get more, is to quit it all the time... No good.
So, for an Ethernet Modem, I would not siuggest BT unless you only have simple requirements from the Modem, and the netgear is cruddy for wireless.