deep, long, slow strokes are what I like
In the end, all modern machines wash well.
The real questions are:
How much damage do you want done to your clothes?
Do you have a reliable service/parts provider close to you? - all modern US machines break more or less continuously.
Do you need to save water/energy/detergent?
If you have a good repairperson for Whirlpool nearby, than even that most-horrid-of-all-brands is the best choice - because you can get it repaired fast. It will break often, of course.
If you have no or only limited access to repair/parts in your area, then you should think very very hard about either pre-90's Maytags or, if new, LG, Miele or Bosch.
Any of the four will run forever without trouble.
If you wash a lot of delicates or your clothes need to last a long time - but are also very dirty, then your best choice is a front loader with water heater built in. Takes longer, but is gentle and cleans best.
If you wash normal clothes that aren't really too dirty, then it doesn't matter too much whether short or long strokes - the clothes will be in the machine for too short of a time for it too matter. But if you have normal clothes that are really dirty, then you should get a machine with long, slow strokes. This will provide the necessary 'activation' while not over-stressing the fibres.
If energy - for heating water or drying clothes is important, then a FL is the only way to go. Same if you have allergy problems with detergents. Way less water, energy, detergent - but way more time.
Make a list and see what is your top priority.
If you have to buy new and US built, then be sure to get an extended warranty. Sears and GE do a good job there - Bosch not so good, Whirlpool, well let's not and say we didn't.