Which one is better for my 2011 Macbook Air, 4GB ram, i5? 32-bit or 64-bit? Which one supports the most software? Which one would be compatible with VMware Fusion? Also I plan on using Windows 7 mostly for music (around 30GB as of now) and movies (around 70GB). I will be using Lion OS X for school via Microsoft Office 2011 Student ediiton. My total SSD size is 256GB. Do you think it's a good idea to have 50GB for Lion OS X and 200GB for Windows 7? My apologies if this has been asked before.