Premier is available for the Mac. And all of Apple's current
computers are x64. The MacBook Pros all come with non-TN panels, which is important for an accurate picture, yet most consumer laptops have TN panels, so I wonder how she justified that.
...but wait, all of the people shown in the adverts are buying a laptop almost at a whim after "testing it out" for a few seconds in a retail store. Where's the detailed pre-purchase research? A $2000 laptop is an investment, she should have decided
what she was getting before going into the store (and buying online is invariably cheaper anyway).
Current Macs ship with x64 processors, but they don't have a 64-bit OS yet. That's probably the most significant change in Snow Leopard.