LTspice model for MOSFET

Is this category appropriate for LTspice questions?

Waveform changes when you change the FET model from downloaded from the manufacturer with the simulation circuit downloaded from the website, but what is different between the model attached to LTspice and the manufacturer supplied model?
Which is right?

· Simulation environment
LTC3895 Demo Circuit - High Efficiency High Voltage Buck Converter (14-130 V to 12 V @ 5.0 A)

· Manufacturer offer model