I've been using Schema theme for quite some time now. Must say it is a quality theme. Improved looks and performance of my blog. It is responsive, looks good, is feature rich and neatly coded.
Thanks to ad management function, my ad revenue also has increased, thanks to smart ad placement options.
Above all, the support offered by MTS is excellent. Whenever I want to modify things, they are there to help me out!
In short, great themes and great support.
Arun