This page is not about which brand, what specs, etc. It's about which form factor to choose. For example, the obvious choice may seem to be a laptop if you need to save space. However, it's likely that there are computers that will fit your needs much better than a laptop would. The purpose of this page is to present alternative computer configurations for you to consider.
Contemporary personal computers are produced in three primary formats: laptops/notebooks, desktops, and small-form-factor PCs.
You're not doing your body any favors if you use a laptop more than an hour or so a day. You could outfit your laptop with a stand and separate keyboard to solve the ergonomic flaws, but there are many other alternatives that will likely be less expensive and more satisfactory.
Many people use a laptop because they want to save space, not because they want a portable computer. It gets untidy though if you want to use an LCD monitor and/or an external keyboard to enhance your laptop.
A mini-tower, all-in-one, or small-form-factor PC may do the job much better than a laptop. Another nice thing -- you won't have any laptop battery fires. ;-) On the other hand, a laptop is nice if you like to use it in your recliner. :-)
I have started a Google Notebook that collects information related to picking a computer, and I will be updating it from time to time: At this time (2008), non-traditional personal computers -- netbooks, all-in-ones and small-form-factors -- are changing very rapidly. Intel and AMD are spinning out lower-power, higher-performance CPUs at a fast pace. Those dynamics, plus the fact that picking a computer is largely a matter of personal preference, makes it hard to provide general guidance. You'll need to do some research yourself. ;-)