Pixhawk for Rover


What would be the best Pixhawk to buy for a rover? Its been a while since anyone asked this question so wanted to make sure I have the latest suggestions.

What do you intend to do with the rover? What sensors do you want to use? Is size an issue?

I think once we know what you would like to do we can discuss more :).

I am also interested about using Pixhawk for a rover, specifically one with Ackerman steering, more specifically to autonomously control a riding lawn tractor