Please tell me about the different types of leveling sytems

Two main leveling systems that I know of outside of manual. Big Foot is what I'm most familiar with.. We bought a Cameo with the Big Foot and love it. Very heavy duty. Lippert also has a system, that I don't know much about. I've had Lippert frames and not impressed with them. Go to their web sights and you should get all the information you need. I love the Big Foot.