Im really drawn to the SSD MacBook Air, but have concerns with the limited drive space. Has anybody noted the actual drive space used and space remaining when only OS X and no other documents are installed? How about after adding Vista under BootCamp? And then adding Parallels? Is the performance restricted because of the fairly low amount of available disk space? Does anybody have a recommended partitioning plan? Or should I give it up and buy a heavier laptop with a more reasonably sized HDD?