Product review (5 stars): Works well for me ...
I purchased the Duet Sport in March 2009 from Lowe's at a special discount.  So far it's proven to be a good washer for me.  It is easy to use and my clothes do come out smelling fresh and just slightly damp which reduces time in the dryer.  I've noticed that I have better luck washing smaller loads (especially towels) than I do with larger loads.  I am a single person, so this isn't really a problem for me.  If you have a big family, you may want to consider a larger capacity model.

I've had better results by running the "Normal/Casual" cycle over the "Quick Wash" cycle as well.  I do leave the door open to vent and run the clean washer cycle at least once a month.  It's in a damp basement next to a dehumidifier so I'd rather not chance mold or mildew buildup in the door seal.

It is on a concrete slab and does "walk" slightly ... I think that's because I installed it myself and didn't level it 100% perfectly.  After some fiddling it seems to have now found it's spot and doesn't move anymore, even with heavier loads.

All in all I'm pleased for the price I paid for it ($300) and it is definitely a step up from the previous basic (Kenmore) low-end top loader I had before.