We had no leveling system on our last RV until we went to a Rally in elkhart in 2015, at which time we decided to get the 4pt Ground Control 3.0 installed. I cannot believe how much easier it was to setup and take down after the install and told everyone that asked me if it was worth the price "YES and would never be without again".
That was last year, fast forward to this past May when decided that retirement plan was moved up to end of this year and we purchased a new 40ft Bayhill 340RK Fifth wheel with the 6pt Level Up system. We love the level up system but that's what came installed on the unit. Had it been the Bigfoot system, I'm pretty sure that I would say the same thing.
Point being no matter which one you get we all tend to like or love them when they are working right and second guess our choice when they **** out.
Ground control is electric where as level up and I believe Bigfoot are both hydraulic systems.