Hardware Router Chart | Tom's Networking. They have Den Guru now and they list the throughput of the various devices. It is amazing to see how fast these are. The Netgear WPNT834 for instance can up/download at 94Mbps. That should be fast enough for any broadband connection.
The D-Link DGL4300 is the same at 93Mbps, so the newer routers are really running at wirespeeds. The Linksys WRT54GX runs at 73/77 down/upload.
However, the older ones never did and were stuck at lower speeds. So the very pouplar WRT54G runs a 20/22Mbps as an example. The WRT54GS at 34/34Mbps