What's the difference between a Flat and Bright brush? Anyone?

I just opened a sale flyer e-mail from Artist's Supply Warehouse and was introduced to a new line of brushes by Liquitex - apparently their first ever brush line.  The offer intrigued me, of course, and the prices seem not too bad.  I'm in need of a couple of brushes so thought I'd investigate.

But I have to admit to some confusion and pose the question... what is the difference between Flats and Brights?  I came across the description below from Connie Nelson's site at this page and thought I'd share with others interested.  Thanks Connie! 

BRIGHT:  "They are shaped flat on the end and slightly rounder in the middle. Bright brushes are ideal for painting landscapes, flowers, etc. When pressed sideways, they create broad and bold brush strokes. Or, you can hold it up and use the sharp edge to create thinner lines. Or simply drag them across the surface to create a even sweeping layer."


FLAT:  "This type of oil painting brush looks very similar to bright brushes, but the difference is that the hairs are   longer. This allows for you to hold slightly more paint with each brush stroke than bright brushes. Otherwise, there is not much significant difference when it comes to brush strokes. They are good for landscapes and still life."

One thing I noticed with Flat Brushes is that if you get just enough paint on it, the bristles can divide and produce some perfect multiple lines or waves in one stroke.  Nice for laying on texture, or defining grasses, lines in architecture, woodgrain or what have you.  It's got to be just right, however, so test it on newspaper first.