After the ten millionth recommendation from another one of my highly intelligent and productive friends, I caved and got a Mac Air.
It's going to take me a while to replace some of my Windows-only applications (MyLifeOrganized isn't on Mac, so I'll need to find something else for tracking). And after 3 Toshiba laptops across seven years, I was fast with Toshiba's keyboard exact keyboard layout.
Those will take a bit of acclimation time, but I'm already impressed with some of the nice touches on the Mac. I won't gush and sing praises - you can get that in many places online - but it really does seem to work together cohesively more than Windows.
Anyways. The more interesting point for you is that I'm going to test the two computer setup - I'll keep my Toshiba for a while, and do any/all internet surfing, media, and things of that nature on the Toshiba. I'll use the Mac only for work and work-related things. I suspect it's going to be a huge productivity boost and procrastination-killer... or at least, the type of procrastination will improve some. I'll update you as time goes by.
Also, feel free to recommend any favorite Mac software in the comments.