I went the Airport Express route too. In the old house I lived in we had a cruddy Netgear wireless router that didn't like to stay connected. Very frustrating.

I've been using the Airport Express for a few months now and not one hiccup. Yes, it is pricey, but it's nice and small and performs smoothly.
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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose