Dura wash was tougher built yes, however 1) the pump impellar would always cement itself to the motor shaft 2)There is no food grinder 3) the soil settler system did not work at all- it was a prosthetic engineering ornament- a gimmick- the GE fine filter actually removed particles many, many times over. 4) Dura wash went from 3 rinses to 2 rinses in the mid 90s with no compensatory design changes despite the soil settler becoming standard around this time period. I've read occasional reviews over the years of people saying the dura wash could do a better job rinsing detergent.
The pop up tower does an excellent job of cleaning in the corners, in fact this is a strong point for GE. GE outdoes Durawash in corner cleaning. Further GE does not leave food particles at the grate where as the Dura wash grate would quickly get clogged up effecting wash pressure. And the durawash grate has to be restrictive - durawash does not have a food pulverizer. GE on the other hand lets food bits through, grinds them up into tiny particles via the piranha hard food disposer, are then captured by the fine filter where they settle down into the sump drain pocket until they are flushed out the machine during the drain period. The concept is highly effective working well even for large dirty loads.
Self leveling legs/wheels aren't offered now with dishwashers, but that doesn't mean they can't be adapted to them. Trust me when I say I have very, very specific ideas of what appliances ought to be.