I've owned one of these for 2 years now and it is my second linksys router after owning the excellent wrt54g (with custom firmware).
Compared to the wrt54g it was a little disapointing that custom firmware couldn't be used on it but I have found the router to be highly reliable and pretty fast (for a 54g). The connection is stable and the wireless has a good range all over my 3 bed house despite being against a wall at one end. It's also stable under heavy load as I regulary stream video from my computer to my media centre and have never had a problem of it failing.
I did, for a short while, replace it with a BT homehub as it promised more features but the homehub was no where near as reliable with it requiring several reboots a week. The homehub was also considerably slower than the linksys over the ADSL line and would never connect over 3MB compared to the Linksys' 5MB connection.
The unit is a nice silver colour (not garish like the early black and blue) and small with a single aerial on the back. It gives all the security features you could need with WEP and WPA security as well as mac address filtering to keep out any unwanted intruders.