How shall we build the next rover?

Table to find best locomotion technology for next version of the rover. If you have access, please feel free to add technologies, modify the criteria or fill out the table. The ranking is from -2 to 2 with -2 being really bad and 2 being awesome.

Criteria Wheels Tracks Whegs Sphere Legged Sledge Swedish wheels
Robustness
Price
Mobility
Complexity
Control
Total