In the end not all Dahons are the same.
You can't compare a $200 Dahon, vs. a $1000+ one.
is just like buying your MTB at your local walmart for $90 vs. buying a real MTB for $1000
If you ask people that complains about Dahons, it'll be from the group of people that bought the mid to low end variations of Dahons.
Ask any mid high, or high end Dahon owners, and you'll get positive feedback.