I've been using Turbocad since V5 and think it is the ultimate CAD package for my individual needs. Started using the CAM plugin with V12 after building a couple of routers. The 2.5 D is all I need for my applications.
The problem I'm running into is the program takes a very long time, sometimes several minutes, to render the G code on complex drawings consisting a huge number of splines. Sometimes it locks up totally. I have a theory that the math involved in converting splines is the problem.
My computing platform is unusual, I'm using a super fast Macbook Pro (Intel based - 2 Gig RAM) with software called "Parallels" that runs Windows as a virtual machine at near native speed. All of my Windows applications run great except for this TurboCAD issue.
BTW - I had also purchased a copy of TurboCAD for MAC without investigating it first and felt that was ripped off since it is nothing like PC version.
I have also looked at BobCAD and determined that it is about 10 years behind TurboCAD on the CAD side - even the new 2007 version. I found a ton of other ugly issues with Bob, but it does render the code at a fraction of the time of what TurboCAD takes.
OK, that's my story - any (positive) comments will be appreciated.