Present
Currently have a Netgear DG834G router (with inbuilt 4 port switch and 54Mbps wireless) and am very pleased with it. My only gripe is that it doesn't support multicast, but hopefully that may be getting resolved with a new firmware update. Other than that it's a very stable piece of kit, and belies the popular belief that Netgear stuff is generally rubbish.
Past
I've had a Solwise SAR130 and it was the worst thing I've ever owned, and I'll leave it at that! Prior to that I had a Draytek Vigor 2600 - did pretty much everything you could want from a router, but a few niggles prevented it being the perfect router, like it could easily have been.