Hello,

I've picked up Mesh2Surface, it's a slick piece of software for this sort of work, and being a Rhino plugin it has smooth I/O with MoI. At this point it's probably not great for highly organic parts, but for the model you posted it looks like you could have ended up with a very respectable solid with low deviation in around an hour or less since it looks like you could slice through that scan to sketch your profiles. I regularly load scans with millions of polys inside of Rhino on decent hardware without issue, although my scans are not super high resolution, rather around 75-80 microns point to point.

I guess it depends on what business you're in, if you're scanning object to use as digital assets then something like ZBrush or 3DCoat is more up your alley. If it's reverse engineering, design, analysis that you're doing it's probably better to just jump into tools like Rhino, Tsplines, VSR, Mesh2Surface (and MoI of course) to get to your solid models for prototyping and manufacture.