tracking on pop3, Inspire or Miraco benefit greatly from IMU compared to older scanners ( I alos have pop1 and pop 2, which I still think have fairly good tracking).
Depending on your need for accuracy I would chose between them or for smaller and even more accurate scanning (but preferably stationary with turntable) think about Mini.
And not to forget about newly available singleshot-mode for all scanners using RevoScan 5.4.3.