I'm looking for a light portable laptop that I can use windows on for work (heavy usage (10 to 12 hours a day) and then use mac OS for pleasure (mostly at night and weekend). I have the 27 inch imac now, but want something portable. The iMac is great and runs like a beast. Never have any issues. I'm running xp. My question is, will the MBA 13 inch entry level be OK for what I'm looking to do? I partitioned the iMac, but am looking to use vmfusion for the MBA. Thoughts and suggestions are much appreciated.