I am wondering if anyone has switched from Office 2004 to 2008 on a MBA. I want to know: 1) if it feels faster or slower (with the limited RAM of MBA); and 2) if it occupies significantly more HDD space? I realize there are a number of reviews and benchmark out there, but there're mixed results. Many benchmarks claimed 2008 to be faster, but user feedback said otherwise. I'd appreciate to hear what you think. Thanks in advance.