I inquired sometime back when I learned of the Calypso machine, about the Catalyst cleaning action. The Catalyst portion of the cycles in Calypso, is nothing more then a special "pre-treat" cycle. Measured soap is place in the dispenser at the beginning of the Catalyst cycle. The soap is then released into a special chamber where it is mixed with water to create a foam-like solution. While this happens, the machine begins to spin. I am not sure what the actual speed is, but I would guess it to be about 400-600 r.p.m. Calypso machines have variable speed drive motors on them, and can run at any speed, at anytime, depending on how the programming is set up. Regardless of the speed, once the machine reaches that given speed, this special solution is released onto the spinning load. From what I understand the idea is, if you can force water out of clothes with spinning action, then you can also force this solution into the clothes using the same centrifugal force. A moisture sensor on the machine, tells the main control unit when the load has been saturated, and once this has been accomplished, the machine pauses and proceeds into the selected wash cycle.
I picked up my Calypso about a year and a half ago out of the trash, replaced the leveler assembly (a very weak point in all Calypso machines), and it has been working ever since. They are indeed, a fascinating machine. They seem to be quite efficent in terms of conserving water and energy, due to the fact they have no water level switch to speak of, and are programmed to utilize Automatic Temperature control unless you tell the machine otherwise. The load is never submerged in water as in a top loading machine or tumbled through a "pool" of water as in many front loaders.
I am not really convinced that the washability is there compared to an agitator-type top loader as of yet, but I'm sure the technology will evolve as it has in all the aspects of the appliance industry. I personally would take one of these over any front-loading machine on the market today. If I had to choose a front-loader, the Duet would be my first choice. But take it from someone who knows a little something from a mechanical standpoint. For the difference in wash capacity, final spin speed(800 rpm on Calypso, 1200 on Duet), and cycle flexibilty options, I really don't see the justification in price difference. Your just doing laundry. Look at what the old Bock extractors used to spin at. What about 750 rpm? And the clothes would come out of them almost dry. OK. Lets talk capacity. How many people are actually going to utilize the full capacity of a Duet? My guess is, they probably won't.
So I guess in summary, I would say if you like flexibility, then Calypso is going to give you more for your money.