Wife let it slip that she's interested in a 13" Air for Christmas. She doesn't care much about updates, and I know one is coming in Q1 but I doubt it will be Ivy Bridge, so I am probably fine getting her one of the current models for Christmas, her needs are pretty simple anyway. But I'm curious, I was looking to upgrade my 2010 MBP to 8 GB RAM from 4 to run Lion, and the folks over in the MBP forum said Lion greatly benefits from 8 GB of RAM. So, seeing as the RAM limit on the Air is 4 GB, how is Lion running? Is it a RAM hog?