Quattro 'Easy Logic'
A friend of mine had one from 2001, either the 1300 or 1400rpm model. It seemed fine at first but a year or so in, it started to rattle on spin (I think it was the door-release Bowden cable that was slapping off the side of the machine).
It then developed screwy programmes: if you turned the knob too quickly, the 'spin alone' programmes became wash programmes! It took ages of twiddling and fiddling to get the programmes back in their proper places.
I also detested the Candy designed powder drawer. It had silly slots that allowed powder to trickle down onto the soapbox surround. Also, the fabric conditioner siphon never worked properly.
I preferred the operation of the previous 'New Wave' range.
But, give its due, the 'Quattro' had a more resilient door interlock peg; it was made of metal. The 'New Wave' had a troublesome plastic peg that wore down quite quickly.