Then you don't understand.
chessrock had some good points in that, ok, Behringer MAY have some original designs, but I would be very skeptical. The point here is that Behringer takes portions, if not entire designs of proven hardware (not neccesarily good, my mistake) and then resells them for much cheaper due to mass production, cheaper capacitors (and what chessrock mentioned) and weaker craftsmanship (messy solders etc..).
Finally, by "astounding unit" I did mean for the price. For instance, the ADA8000 or whatever I've heard is a fairly versatile interface, which costs about 4 times less than my Aardvark Q10 and contains many, if not more, of the same features. If all is in perfect working order, then you have a very useable DAW interface (one would say astounding for that price, even).
Of course with shoddy components and unshielded grounds or whatever, you're going to have noise in your pres etc. I remember seeing an article about someone who bought a knockoff computer motherboard and replaced all the components with high end parts (sorry can't find the link), and there was a noticeable difference in stability. Pertaining to this subject, I'm not sure if it's viable, however, the concept is still the same.
If it looks like it's Laid out like a Mackie, and you think that Mackie has a good design, then it's of decent design. As stated earlier, the design is flawed by the craftsmanship.
I'm still going to stick by my original post and say that Behringer isn't all terrible. They offer a line of products that work, and work well enough, for the budget minded hobbyist or producer.