worked with joomla and open source cms more than 5 years with more than 75 Site including all styles and scripts , i think i will help you perfectly , just clearing what you want in Joomla sites.
In Short Words : High Quality With Low Price
My Values In work :
I believe That Work With (Web 2 Working Style ,Focusing at Security Rules , Simplification Code , Classes , Frameworks , Open Source Benefits ) Will Provide Complete Project .