It maybe a bit of a beast, but the Quantum Qflash with QTTL Adapters for Canon and Mamiya is the route I am taking. I am using a Stroboframe with a vertical flip for each Qflash and camera combination.
The Qflash works fine in Auto and Manual modes. At this time I need an factory service upgrade for both of my older Qflashs for the QTTL features to work.
Joe Bossuyt