Themexpert's Cohesion comes in 6 color variations and K2 support. Its layout provide 70+ module positions and is ready for iPhone and Andriod. By the used Expose Framework, you get a lightweight and fast loading theme, which also support RTL language and will be delivered with a lot of extensions, like Xpert Gallery module, a video widget and ExpertExplorer. Cohesion is commercial. You can use it best for business- and corporate websites. Its native to Joomla 2.5.