Sound wise I find the products from Sample Modelling the best. They are also more expencive and to make them sound like "real" you either need a breath controller, an expression pedal or work hard with automation writing. I find none of the CMusic Production usable. They do have a nice entry level price wise but they sound "not real" and like a synth. In fact there are synths that do a close simulation that I rather prefer if I were looking for a "synth brass sound".