In a nutshell:
There are four Tern HSD Gen 2 models.
They all have 75Nm of torque and 545Wh batteries.
The S11 and S00 are more expensive than the P10 and P5. In addition to the gearing, they have the following upgrades:
Better lights (brighter front, and brake light rear)
Better tires
Thudbuster seatpost
Kiox 300 display (instead of intuvia 100)
Included Bosch Connect Module (for tracking and alarm)
View the full HSD Comparison Guide Here