My business involves high quality video/audio presentations to groups between 10 - 50 or so in size. The video end is primarily a Powerpoint presentation with text, charts, graphics, high resolution tiff photographs and HD video as high as 1080p depending on what content is available. I am reviewing through all of the DLP and LCD WUXGA level projectors. I'll initially be using our Intel duo core Mac mini with two GB of RAM onboard moving over to a Mac Book Pro - perhaps the Merom based one later in the year. Things are not so clear on the audio side. I'm leaning towards the Toslink optical out going into some unknown integrated amp going into a pair of yet to be defined reference quality speakers. There is no interest/need in any subwoofer arrangement. Also, I've looked at some of the self powered speakers but that narrowed the choices significantly. Size and weight considerations are important as I will be transporting them with me in a custom case (laptop/mini/projector/speakers/amp). Very interested in your experience and suggestions.