Most do not understand the delineations between the various offerings and it's even more disheartening to hear this from the mouths of account managers or CIO's - much to the detriment of some serious contenders for their BI space.
James Dixon's Blog takes a novel approach to rectifying this.

On the subject - Micro Strategy now offers the Report module with 100 free seats and Pentaho has some more stuff from Lucidera!!