Summary: I already had a wired LAN setup and wanted to switch from wireless n to wired gigabit. The router found the network immediately and basically set itself up. All I had to do was "jog" the NAS to look for the new router. I now have gigabit transfer from pc to NAS. A commercial-free episode of The Mentalist takes about 3.5-4 minutes. Very nice!
Summary: Bittorrent, heavy video streaming and music all flow seamlessly through this router. GameFuel gives you "some" priority settings, but only thru the WAN interface. The built-in switch is 1000Gbps rated, though I use a ProSafe Netgear Gigabit for switching purposes, so I cannot comment on the switch. The case is a nice mat black color. I wish it were a metal cabinet, it is lightweight plastic.
Summary: At our home we have 3 computers 1 XP and 2 Vista, and 3 gaming consoles, When we had our old router we would always have connection errors, after installing the 4100 we have never had a problem running everything at once. Good choice for anyone running several wired connections. especial when gaming.