MemberCast

Have not been impressed with MemberCast -- which is an add on to Microsoft Dynamics.  
Regularly wait a week or more for support responses.
Requires a strong technical in-house administrator or $$$ for configurations.  
Not for small staff/small org.
Can see potential with stronger support and a team that understands association management. 
Now under RSM's technology services. Associations are not their primary client base.
Note: We are not using the system to capacity for various reasons including costs, implementation issues and third-party contracts. 

You need an inhouse IT department for this software.  It's completely customizable as long as you have the staff to configure, otherwise this can be costly to integrate and maintain.  Custom workflows that have been created for our organization will be randomly broken after and update from Microsoft meaning that each day could be different than the last.  

There is no built in logic.  You have to think through each and every step you implement.  This system would be great for an organization that has a team devoted to planning business processes, workflows, updates and writing SOPs.  Otherwise do not waste your time.