Really it is horses for courses,

If I am doing work for a client that can be done in Aspire, that is the tool I use (still has a learning curve and still learning a lot with it). If it needs engineering edges I tend to use CamBam and have set things up for that purpose. Really it depends on what you are using it for and money and time. It took a good while to be able to afford Aspire. But aspire allows me to do drag and drop of pre made models to build finished products for clients and that saves time. It really depends on what you are using it for and what your CNC is for. Jazz is right though that doing a project with the software is the best option.

Michael