I have a first gen 500Gb TC that's been refurbished by Apple (typical 18 month failure) and has been working just fine ever since then. I'm running out of space now that I have an iMac and a Macbook Pro that use it as a backup device. Just wondering what you guys think of the current gen as compared to the first gen. Is it a significant boost when it comes to wireless performance? And if so, does it even really matter when it comes to using it as a backup device? If all you gain from the current gen is shaving a few minutes off backing up, then is it really worth it? Anyways, bottomline question is this: Should I buy a new bigger time capsule or just upgrade the hard drive in my first gen TC? Thanks for your opinions!