Well from my experience there is not such think as bugs free software but one thing is for sure Michael RESPONSIVENESS is all you need.

Also to clarify things the architosh article is from 1999. http://integrityware.com/ Solids++ is NOT used in Vectorworks anymore. VectorWorks 2009 adopted Parasolid Modeling Kernel. More info here why. http://architosh.com/2008/09/architosh-talks-to-dr-biplap-sarkar-about-parasolid/

Anyhow if you look the Tech behind http://integrityware.com/ and http://www.smlib.com/ Michael should have all the Muscle needed to create one of the strongest Modeling apps out there.

Here is one of my favorite parts. http://www.smlib.com/sdlib.html (Michael Lounsbery PhD was a senior researcher and primary developer at Alias of Maya's subdivision surface library and polygon mesh library).



Who Needs TSplines or Imagine and Shape If can get that in MoI? For sure it does not happen from one day to the other. But can you imagine that day...Zaha Hadid and I will be so happy.