I personally like Linksys but their support sucks, especially if you ever have a real problem with a faulty piece of hardware. The quality of their products is good but if you ever need to use their support, you're out of luck and they aren't very helpful if you need help with configuration either.
D-link has a very extensive collection of info on their website, as well as emulators for their UI, knowledge base articles and many other helpful resources. I'm still a bit leary of them though because of past experiences(several years ago they were horrid, both in quality and service) From what I've seen of them in the past year however, they seem to be making a very solid product lately and backing it with a very user friendly interface and lots of help for those who need it.
SMC is good if you know what you are doing, they aren't really geared toward the novice.
A couple to stay away from would be Blitzz and Belkin. There are good reasons these brands are so cheap. You get what you pay for and I see nothing but problems from these two.
Just remember, if you are going to get one with wireless, stick with the current standards, don't get one with the pre-n, or double speed features unless the adapters you are using also support these features. Many of theese don't work so well with adapters that don't support those features unless you disable them, then you've wasted the extra money you paid for the features.
