I've been researching 3d scanning and photogrammetry for almost a year now. Einstart has the historical technical expertise to produce a quality product. They've managed to offer a scanner at 1/2 the price,, double the resolution,, and less workflow than other scanners costing 2-3X as much. It still not perfect,, stitching multiple scans might still be a challenge,, and bed size is limiting,, but looks great for a hobbyist/entry-level piece of scanning equipment.
As for larger scanning:
- Nothing affordable looks good yet.
- XYZPrinting just released a $200 hand-held,, but their reputation is too tarnished to even consider trying it,, and reviews are already coming back as negative.
- Autodesk Momento looks like it will emerge has the premiere photogrammetry application.