From all my experiences, D-Link is horrible. Not the worst, but damn close.
I wouldn't say horrible, but Linksys does blow it out of the water. When I was testing out wireless routers (and before I just said screw the whole thing), I found the D-Link DGL-4300 to be slower than the Linksys Wireless G, despite being rated for twice the speed. I did in the end, end up selling both, but still. Reliability wise they were about even though.
Edited at Sat Dec 17, 2005 11:02:47 PM
Michael: Jodie, how's my schedule look for today? Jodie: You've got a conference and dinner party at the Japanese Embassy regarding wildlife protection. Michael: Oh, yeah...sorry, but I'll have to cancel that. I'm heading out to save America!
I have a D-Link router, It's wired, I haven't had any problems, and I like it's Xbox compatability. However, My friend purchased a wireless one for his laptop, and you'd walk around the corner, and there goes your connection