3, prefer the horizontal layout and think it focuses more on the heads than cabs.
That said I would seriously change the wording; use "isn't" instead of "ain't," expand on the 'get real' tagline, and swap "cranked" for "blasting."
i like the vertical ones best,
i´m not a fan of the horizontal designs to be honest, as i find the texts on the right hand side is not eye-catchin enough.. my eyes immediatly focused on the diezel and ENGL logos.. and that was it, i totally ignored the text on the right side.
but on the vertical ones the focuse is really on the text!, especially "tone".. then you know what its about..
If you read "Because tone isn't just in the fingers, put yours in the right hands", would you think "yours" can be understood as applying to "fingers"? Which would be a bit clumsy