I've been a legal technology consultant for 5 years - meaning that I specialize in software targeted to lawyers. In practice, I'm a jack-of-all-trades solving problems with mainstream business software, hardware and networking issues. My expertise is in Windows but I have been using a Mac as my main production machine for 9 months now, slowly learning tricks and tips there. I have limited knowledge of Linux but use the e-smith distro for many of my client's servers due to their ease of use.