I was very skeptical at first . . . I had grown to like having my Linux box
beside my main computer so I could surf while something whas cranking away
on that box.  With my new system though, it really comes down to a matter
of efficiency.   One keyboard, one mouse, no no confusion on what's going
on where.  Cut and paste on one box.  Simple.   

Think of it like this:

If you are freelancing or doing other pay per hour work, a new PC can run
about $800-900 or so.  My productivity  gains between this and the new
software I bought will pay for this system in a month or less . . . meaning
the other rewards will be pure bonus past that first month.  I'll use my
new found time to spend time with my family and work on a street rod
project.  How much is your time worth?  If not from a $$ value but from a
worth to family/friends/etc....    I'm sure I could kludged a few more
boxes together and maybe equaled my current setup, but how much time is it
to get those other boxes running?   Doing something for fun and getting
paid to do it can make a big difference on your return on investment numbers.