I am in the same boat as many people, I travel (in airport/flight) 40-50 hours a week. I had a 17" MBP that I just replaced with a new Unibody Macbook.
One of my main gripes about the ultraportables out there is they just feel flimsy. For something that you have to pick up and carry with you everyday, I wanted something study, well manufactured and able to stand up to the everyday abuse of bumping it into old ladies heads while getting onto the airplane.
I was pleasantly surprised with the solid feeling of the new Macbooks, they are sturdy, the screen sits flush, does not pop open, when picking it up to move into the next room with it running and the screen is open you dont get the weight of the screen slamming itself shut on your fingers. (Hated this about my MBP).
Granted I upgraded from a 2.33ghz 17" with 2 gigs of ram and the x1600 to a 2.4ghz, 4 gigs of ram, 9400M which was a large performance jump for me and some of you with the newer MBs and MBPs may not have seen that large of a jump, but overall I am extremely pleased with the following combination of items that makes this new MB the best machine I could have purchased:
1. Runs OSX
2. Sexy (I am a fanboy when it comes to apple products)
3. 4.5 lbs, a bit heavy but you get the bonus of the build quality from the extra weight.
4. Powerful machine packed into small case
5. Bright, vibrant screen (Especially when it is reflecting the trees behind my desk).
6. Solid build, wonderful manufacturing quality (finally, Apple took a dump on the last MB and MBPs).
7. Trackpad
8. Trackpad
9. Trackpad
10. Did I mention the trackpad? I have always been a person frustrated by cords and peripherals so the new move towards "air" like peripherals has been a big selling point for me. The other thing I have always hated is being forced to use a mouse to be productive due to poor trackpad design.
The new glass trackpad is without a question the best I have ever used. The surface is silky smooth. The "click" by pushing down is nice but I have already switched to "tap" mode. Right click in the bottom right quadrant, multitouch capabilities. I can't really explain how nice it has been to use this.
Now if they could give me a 24 hour battery life I would consider notebooks to be ultimatized and just await wet-wiring as the new ultra portable technology.
~Ael