I would concentrate more on "good value bikes" instead of good value brands. Almost every brand has bikes with more bang for the buck. I am sure that Jamis, Fuji and Giant have very expensive high end models with relatively low "value."

For that matter, many high end companies have lower end model bikes with pretty good value. For example, you can buy a Cervelo RS with Rival for $2600 list and that exact same frame has been ridden and won many pro tour races.