<p>The other consideration is to get a used Mac during the “product refresh interval” and save hundreds. Assuring that the device has Applecare warranty is a practical concern. Because every 8 to 12 months, another technological advance, and the important stuff is your files, which can be easily stored anywhere. The new line of IvyBridge Macs due in June/July may not have native Ethernet – so people have been complaining about the need to buy a clunky adapter to route data through the Thunderbolt port or the USB port. But that’s the price of making things ultraskinny without losing battery life.</p>