Let me first answer your question - No, however I have sold both.
I too feel the Sanyo ECOi is a good system, and far less complicated the the Mitsubishi CityMulti that is probably being redesigned and will be unveiled at ASHRAE2008. The difference for me between Sanyo and Samsung becomes the service after the sale & installation...Sanyo's Distributor STINKS , Samsung's DOES NOT.
I have little to add over Daikin, other than they came into the US several years ago...are they here to stay this time?
For technical service the people at Samsung and Sanyo have both been accessible.