Why does Airport Express give better WiFi n results than Airport Extreme ? I have an Airport Express with 802.11n only (5Ghz) and an Airport Extreme with 802.11a/n - 802.11b/g/n (limited range of settings options) With the Extreme sometimes I get 300Mbps, sometimes I get 130Mbps, sometimes 54Mbps. And it changes every so often ! The location of the MBA is the same - 3ft away from the Extreme. Then I added an Express unit, next to the Extreme. Connection rate : 300Mbps. Solid - no changes. No-one else is accessing either unit Anyone else see this ?