If anyone is considering Parallels or VMWare Fusion I would highly recommend you avoid Parallels ! Parallels have just been really sneaky and in a normal software update (not even a major update) reduced the amount of memory you can assign to a virtual machine to 8GB. This is very underhand - removing functionality - and I would recommend if you are considering a product you avoid Parallels. This is in addition to the requirement that you upgrade the product with them each year. Parallels now costs more than Windows itself from Microsoft !