Both LTspice and SaberRD are technically powerful simulators with their respective features and advantages.
SaberRD allows users to perform system level simulations.
On the other hand, LTspice is advantageous for detailed component level analysis especially when involving Analog Devices’ switching regulators, linear regulators, amplifiers, as well as a complete ADI library of devices for general circuit simulation.
In a business perspective, one may be able to decide which simulation tool to use in their design based on the preferred platform of their customers.
Often both simulators can be used in many designs.