I spent some time researching the different components out there, and none looked as apealing, easy to install and use, yet be powerful and scalable, as SOBI2.
SOBI2 seemed to have all the features I was interested in, and many others.
And the support for it is awesome. Usually, if you post a question on the support forum, you'll get a response that day. I would recommend SOBI2 to anyone looking for an easy to set up and use directory. Good program and excellent support.