Originally Posted by Padawan
It's true that most bars will function similarly. However, if I were selecting one, it would be a 3-point (triangulated) bar such as Carbing or Benen. Will the extra point provide a noticeable increase in stiffness? Perhaps not, especially when driven on the street, and especially since such effects are nearly impossible to objectively measure, but the additional cost for either bar isn't really tremendous.
As I understand them, the triangulated strut bars kick ass and do add that much more stability, BUT they'll bump you right into SM class in Auto-X.