John,
Yes, I have several machines of both configurations. Personal preference wins out here and neither of us are wrong, but I would take the non-triple disp. machine any day. I wanted this particular model because it has the separate dispensers. I'd be even happier if they didn't have any dispener solenoids, but I realize this is for mid-line fare.
The triple dispenser honestly is not a favorite of mine. I know they're fun, and certainly quite unique to vintage machines and also very effective, but my experience with them recently hasn't been fun. In three machines (a 1972 Lady K, a 1985 Lady K, and that white 1986 Lady K from Andy), none of the systems worked properly. One needed the flow control valve that mounts to the transmission brace. One needed the whole reservoir, and one needs a solenoid AND the the flow valve. One I had to clean with a roto-rooter type brush to get all the mineral build-up out of the hoses leading to the softener section. I have a decent stache of parts, but we are looking at $$$ here. Other than dried out plungers (or clogged ones) in the electric dispenser version, I haven't had nearly the problem with these. Of course I may have just jinxed that now!
I think I worded my comment above poorly, but its the 1980 machine that I have been warned about the solenoids going bad - not in ones with the triple disp, however maybe they all do...
In whatever configuration, I intend to have these machines up and running properly. I will say that as I see it, they fit the old philosophy that people used to have about high-end machines - "just more to break".
Gordon