Are you an AIIM member? If not its probably a good idea to become one since they provide with with a broader perspective of EDRM than than a single product vender would. I joined two years ago and received the Practitioner certification which entitles you to their magazine and other perks.

Here are some of the resources available as a member:

The AIIM Web Site have much more to offer resources wise such as blogs and RSS feeds as well.