>…since routers create data collisions etc. that slow down the interplay of devices competeing for access to the one upstream connection (single IP address).
That certainly has not been my experience. I’ve clocked three PCs simultaneously and heavily using a router connected to A Motorola/Surfboard SB2100D MODEM on a cable system and could not tell from the performance of one of them that the others were even using the Internet. Besides most routers are switches and collisions should not happen. I would think a router on a cable system is about as fast a node on the Internet as many of the nodes through which packets must pass to get to and from the PCs connected to the router and the web, ftp, etc. servers on the Internet to which they are communicating. In other words, I do not think a broadband router is a bottleneck to small LANs. Larry