meshcam is a good example because it lets you play about with machine settings to visualise how the final cut will look, and the cutting strategy program is very easy to understand, and allows you to visualise the cutting paths. i have looked at but not used sheetcam and some of the other more complex softwares, even to the very expensive. They all have a massive learning curve. whereas, if you cutting/profiling stone, especialy complex 2.5 D profiling into stone, mesh cam is very easy to learn