The DSP sound will blow you away, I, and Meridian staff, would surely be sure about that! There is something more in the M sound that only them could apply. Isophons are great pieces of mecanics but what about the psychoacoutic side of audio? I am so in heaven with my modest DSP setup that I cannot for the life of me believe anyone who would dislike any DSP system!?
All that sounds like a fanboy blab, but be sure that if another maker could provide this kind of sound for less money, your servant, who is a poor freshly graduated would certainly go the cheaper route...

861v2, DSP3100, DSP3100HC