Hi,
as no one has posted a comment so far here is some help for your decision.
Check out the following link:
http://www.ni.com/pac/
and ask yourself these 10 question for the systems in question.
If you're not familiar with the term "PAC", here is some information about it:
http://www.ni.com/pac/pac.htm
You can also check out if there is a seminar available in your region about PAC's.
http://www.ni.com/seminars/
Kind Regards
Stephan A.
National Instruments