Steve - it is just the one rinse..3 minutes, I think, same as the Superba 22 Architect Series I had years ago. I always use heated dry on it, and it dries okay, just not plastics. It also leaves the tops of many of the items on the upper rack wet, especially cups, something the GE does not do. But honestly, I had the exact same complaint about the 22 Superba as I have about this one.
I will bet you that the 21 does a somewhat better job because it has a longer cycle than the Superba does, and a longer, heated main wash to boot. I was surprised myself, because I really expected the KA to outperform the GE, but to start with, there really wasn't anything the GE didn't do well...it just isn't as pretty as the KA!!
Now last night, I tried Finish in the KA. It did a somewhat noticeably better job than enzyme detergents do. I'm going to keep using it and see what happens. It was a pretty dirty load, pots, pans, baking stuff...all came out fine on Soak and Scrub with Finish....just one pot had some residue that wiped off. But really, there is no excuse for peanut butter not coming completely off....something the GE does even on its Speed Cycle. Since my dog loves peanut butter, it's what I use to give her her medication every day, so I have lots of utensils that are PB coated.
I still love the machine for its classic vintage yet modern style, and utter durability. As someone who cooks a lot, and entertains often, it's sometimes difficult to overlook its shortcomings when the GE is sitting in the garage, very capable of overcoming all of them.
I would be really curious to see how the new KA you have in the box in the garage stacks up the the 18 you have in the kitchen now. That would be an interesting test!!