I went from a David Laserscanner with a Logitec webcam and a simple line laser to first generation Kinect with Quokka. Used Kinect once with Artec Studio after I purchased an Artec Leo. Since they had issues in the development of the Leo, I received an Eva to play around. I hate the cables!
Scanning is less than half of the job, really! For rendering 3D objects, something mainly visual I’d say a Kinect definitely works but as soon as you want your scan to coincide with a part and its fixture, only a real scanner provides reliable results. You should also keep in mind that processing the scans into a watertight mesh is a crucial part. You can spend a fortune for reverse engineering tools or use Rhino.
Good luck!