I have an Excalibur 26, with very little space for a navigation station; I also need something that has very little power consumption - this system fits the bill and doesn't put a dent in the crusing budget. With all this said, I think it is fool hardy to go anywhere with out the most detailed paper charts, charting tools, back up magnetic compasses and the skills to use them - don't just depend on your GPS. I supplement this with compass binoculars and the simplest Davis plastic sextant.
The other reason for creating a navigation station even if you are shopping for proprietary navigation electronics is to have first hand experience with the features you will want. I have only tried the chart plotting, but hooking an anenometer and keeping track of wind data is also possible. I emphasis the importance of traditional navigation skills, but there is no reason not to familiarize oneself with the newest technology, especially when it is free.
Linux is great operating system, and the abundance of GNU public applications that are free of charge is astounding. I am not even going to mention kStars, Xtides and Xephem planetary software (these are neccesaties to me.)
I do 90 percent of my website and internet work sitting at home using a MAC, but having an inexpensive mobile workstation is great; and it is even better now that it is a functional Nav station.