Best to ask others how well it performs and possibly check the  Content Paradise store all time best sellers rankings to gauge how popular the suite is. There is no demo but both Content Paradise and I offer a money back guarantee.

I prefer not to self promote, I mentioned the product because it will provide a quick solution to your problem. I am more than happy to continue to help you using the software you already currently have.

Friendly cuts:
The Scissors module does not result in polygons with more than 4 sides, plus there are tools to smooth the cut edges. It would be wrong to say that you would never get a failed simulation using this module but your chances of success are vastly improved over what you are doing now.