"Ok...just to help at least clarify a few things, you guys might want to have to open up your minds for a second and let go of what you've been doing. Take this from a 20 year vet on everything from Alias, Solidworks, Rhino...etc. These 3D tools are nothing but that..different tools to leverage the best out of them to meet your end goal because in the end it's all just data represented differently. That said... Can models be made as exact as Pro/E, Solidworks, Inventor... YES!!! the difference is that it's not parametric. Make a box, type in the LxWxH and it's not different than any other program. Can changes be made so that it's "exact", so that it can be manufactured...again yes. Modo doesn't have the level of curve control by any stretch of the imagination like Alias. But then again I'd also say that Alias can't touch SubD modeling. It's not a case of one is better than the other, just different. Nothing's perfect, but with regards to converting SubD to NURBS, something that can be done is to select the polygons in Modo, apply a texture to it, and that then becomes a "hard edge" in NURBS. Think about that for a second, there's full control over how the SubD is being converted to NURBS so that the surface/face, or edges can be selected. There's never going to be the perfect program, you might as well just keep holding your breath and wait till you're blue in the face."