I was given about 3k last year to purchase a mac pro for an upcoming project. That project is well underway, and it's becoming apparent that the Mac Pro is more than sufficient for my needs. While I use Photoshop CS3 quite a bit, I rarely work with images larger than 200 megabytes. I also user Aperture 1.5 a lot and tinker with Cinema 4D R10 in my spare time. Aside from that, I spend most of my time on the computer writing in Mellel or Ulysses. I'm seriously thinking about selling the Mac Pro and using the money to get a MacBook Pro instead. The thing that's holding me back is that I've never owned a portable without also owning a desktop machine. "Laptop" computers have never had a stellar reputation for reliability, and I'm wondering if I'd be making a mistake by using one has my workhorse. There is the potential that I will also be doing some video editing in the near future. I guess what I'm trying to say is that while I don't necessarily need a 4-core monster, I do need a machine that can handle maximum CPU load for a few hours at a time. And since I'm primarily a writer, the portability will be extremely useful. What would you do? If you had a Mac Pro that you thought you could get $3500-$3800 out of and go portable, would you do it? Furthermore, has anyone else here "ditched the desktop," even for heavy-duty work?