ISC bind -vs- Microsoft implementation of bind.

[Dennis Leiterman]

Hi,  I have been responsible for our dns at where I work for years.
We started out using a Vax running Multinet and have migrated to
Linux using ISC's bind.  I have been asked to justify using bind and
why we don't move over to Microsoft.  I have looked on the net 
and the only discussions I see look more like religious wars, I was
hoping to find something a little more technical.  I have used Microsoft
in the past and have had problems.  Of course, working at a large
company, they would rather hear it from someone else.  Can someone
point me to some technical comparisons between the two....thanks
in advance.

-Dennis Leiterman