The company that I work for, OnDeckTech, recommends Linksys. We are a Mac based consulting firm for home users. We consistently install and support Linksys on Mac based systems. The Airport does have some issues regarding resets and of course is very expensive. May I suggest the WRT54G from linksys, it is available at most local computer stores and can be purchased from $50-$70, depending on sales and locations.

If you have any further questions please ask.