Round Brush/paddle? Drying Straight?

Okay, I may be opening myself up for a "duh" or something, but when I try to blow dry my hair straight using a round brush, I get curly-on-the-ends hair. I have chin/jaw length hair with bangs (which get especially curly with this method). I think I am pulling the brush taught, but my hair doesn't "stick" on the end, you know? I mean, it just slides off when I get to the ends. The round brush I use is of a good diameter, according to the woman at Sally's (who sold it to me) for straightening hair. What am I doing wrong? Do I need one of those obscenely large round brushes, even though my hair isn't long? Should I use a paddle (flat backed brush)? How about some discussion on this topic? I know a lot of people blow their hair straight..and I'd like to join the club!

> I have in the past used a large and small round brush, and I find myself having the same problem as you! Then I bought a metal vent paddle brush, which when blowing my hair downwards makes it soft, shiny and straight! The metal also helps it dry faster, so there is no time for it to curl back up [I also use no staightening products and have never chemically straightened it]