Extraction between cycles
I agree with that. A decent machine should have good spin efficiency, not only on the final spin, but between the rinses too.
Typically, UK Hoover machines used to have a constant slow spin between rinses. In 1993, that changed for a spell, with the introduction of the Hoover New Wave machines. They featured the all new Dynamic Spin Rinse, which had four staged-spins between each rinse interspersed with tumbling, each progressively faster than the last - say for example: 500rpm, 800rpm, 1000rpm, 1300rpm. If balance couldn't be achieved, the fastest spins might not be reached. As the drum decelerated, water was introduced from the front into the drum, allowing an effect similar to the Hoovermatic twin tub spin-a-rinse.(We had better programmes on the washing machine than we did on television!).
As I type this, my new Panasonic is busy rinsing. On the Cottons 40 degC programme, there is a gentle spin after the main wash. The first rinse then takes in water, and the machine progresses to distribution speed (similar to the detergent-mixing phase on the wash cycle). I presume this is to dilute and clear suds. The jet recirculation spray is periodically switched on for short intervals with normal tumbling. The spin between the rinses is stepped, but at lower speeds. No tumbling occurs between steps. Rinses two and three, are normal tumbles with recirculation jets.
Comparing this machine to the previous machine: the new Panasonic washes and rinses more effectively - because of the horizontal drum and the recirculation pump.
The old Panasonic had a tilted drum which meant wash water gathered towards the back of the tub - fine for smaller loads, but it meant large loads took some time for water to penetrate. Factor in also that the drum lifters/shower-paddles were only two-thirds of the depth of the drum, meant water only sprinkled onto the rearmost third of the drum depth. There was a fresh water spray jet at the front of the tub, but it wasn't terribly effective at doing much, other than dampening the load. I will give it its due though: the old Panasonic was efficient at getting the load balanced for spinning - probably due to the tilt causing laundry to fall to the back wall of the drum.
An earlier Zanussi had a tilted drum and recirculation jet, and was quite effective at soaking the wash load and rinsing. Spin balancing was also good (thanks to its tilted drum).