I recently purchased the Anderson levelers and used them twice. My wife and I are extremely pleased. Faster and more exact for side to side leveling than wood/legos in our opinion. When we arrive at a site, we check the level and then set the Anderson's on the appropriate side. I get in the truck and the wife stands by the level and I start to pull forward, she signals me when level. She then sets the wedges and we are done with the side to side leveling.
2011 30' Classic
2015 Ford F250 4X4 Platinum