Currently available from Apple are the refurbished AirPort Express (June 2012) and the previous model AirPort Extreme (June 2011) for $75 and $85 respectively. Im wondering about the differences between the two, and Im also considering whether either one would be enough of an upgrade over my current set up to warrant the expense. Here are my questions: 1) Which model will offer better performance in terms of range and signal strength? This is my primary reason for updating, as the biggest issue that I have with my current network is audio dropping out when streaming music to my Apple TV. 2) Does each model offer the same in terms of a/b/g/n compatibility? I realize that only the APX has an audio jack and only the APE has hard drive compatibility, but are there any other technical differences between the two that I should account for? Currently I have an APX (2008) as the primary wifi router in my apartment but it does not include dual band wifi, which I think is limiting my network performance.