Take the Sony back. Seriously.

Slower processor. Slower graphics. Lower resolution screen. Slower Ethernet. No Bluetooth. Un-powered Sony-style mini-firewire. Heavier. Thicker. Comes with Vista Home (ugh!) BUT... Same price. Ok, there's a rebate on the Sony right now for $100. But you can easily find a 15% discount on the MacBook by using an alternate store interface.

The Sony does have these things beyond the Mac: Blue Ray Disc. SD/MMC slot. Larger capacity HD as default. 1 extra USB port. HDMI connection without the need for an adapter. S-Video connection without the need for an adapter.

My very well educated guess, based on my own experience and reports from others in situations similar to yours is that with a Mac you would find yourself booting less and less into Windows. There's no need to be any kind of creative type to use Mac OS. You don't have to have a creative bone in your body in fact.

Anyway, of the other notebooks that were out there, the Sony is probably the best all-around choice next to the MacBook Pro.