It looks good, but I actually like Active Directory. Makes managing stuff simpler on my end.
I was at a clinic to help with the implementation of AC. I found it interesting that their IT guy installed all the printers one by one on 15-30 machines when they wanted to print things like clinical summaries from AC. Took him several hours when you could just use a GPO instead. (5 minutes)
Active Directory has its place. Like you said if you have 5 people/5 machines or less and people have fixed workstations, it's not a bad idea to use something like Win 7 or WHS 2011. When you start adding more, things get a little complicated.
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