Looking for Magnetic drive manufacturers. Are these proven as compared to  traditional VFDs .

Are you referring to magnetic couplings used to eliminate dynamic seals? You can utilize both a magnetic coupling and a VFD, the magnetic coupling transfers your torque the VFD is your prime mover.

We have a few customers who use MagnaDrive units. They do need to be installed and set up correctly; from that point of view, VFDs are easier.