Airport
Yesterday, we took down the last of Eastgate's inter-floor ethernet links and replaced it with an Airport Extreme base station. We're now entirely wireless between floors, with local nets handling each office; everything is faster and more reliable, and bringing the network up was remarkably easy. (An earlier attempt with third-party WiFi ran afoul of extensive weirdness that stumped experts; if you need some Linksys access points and bridges at a good price, let me know)