I owned mba for couple months and i have some complaints in comparison to the macbook pro. First is the touch pad. The overall feel of it seems much harder to press and scroll in comparison to the macbook pro. After several testing, scrolling in mbp was much smoother. It also mbp feels more solid. Second, is the osx lion for mba the same for mbp? I have a feeling that osx for mba is a lot choppier than the mbp. I doubt it's because of the lower processing power. I think it has to do with system optimization. Is anyone else experiencing the same issue?