Comment Database selection (Score 1) 97
There is a ton of research to help you decide what to do here. The first place I'd look is Idealware - Here's a link to their Low Cost Donor Management Systems Report: http://idealware.org/reports/consumers-guide-low-cost-donor-management-systems.
It also has a very handy selection process, which you should follow when choosing ANY system of this type. Download the FREE report - it's worth it.
Marc