Stylemixthemes makes a great themes with excellent support, if there are problems they can solve it!
I have bought their BeTop theme and it is great. You can customize anything. Also they have a very fast and great customer support. Good job!
My favorite authors on envato. Purchased several of their themes and all are amazing! They all have maximum usability!
StylemixThemes are awesome. Great customization flexibility in the themes and they are providing excellent support.