SnowRunner - FleetStar VS Step 310E - Side By Side Performance

The International FleetStar trades blows with the very similar Step 310E. One will be found very early in game, the other, potentially quite late in game depending on how you play. Not to mention both may require substantial upgrades to perform the way you want. The Step actually has a wider and longer wheel base than the FleetStar, which could help with stability in harsher terrain. The FleetStar has a shorter wheel base making it more maneuverable but also sports slightly larger tire size helping to traverse rougher areas. Neither took damage despite some absuive driving. Would you use one over the other? Or just move on to bigger metal to get the job done?