I'm one of those people who likes to stay with what's stable - which my system has been for some time. But I'm thinking of having my University student daughter pick me up Logic 9 at the bookstore. However based on my current set up below, would that necessitate upgrading to a more current G5 and different interface as well? As we know, it's a slippery slope. Furthermore, are there any limitations to the student version other than a singe installation and no upgrade? Your advice is much appeciated.