We have BigFoot, and we love it. As you know BigFoot has 4 cylinders each with there own pump assembly. The cylinders are made of steel and have a lifetime warranty on them. The front jacks are rated for 17,000 lbs each and the rear are rated for 12,000 lbs each. BigFoot has 7/24 Emergency service (never need it, but it is there).
Both are are fine systems, but BigFoot has be doing automatic leveling systems for a lot longer (20 years vs 3 years for Lippert).
If you place your order threw Plug-it-Right you will save about $800, and the factory still does the installation. The MICHIGAN location is $4,460.70 (including tax and installation) threw Plug-it-Right.
http://www.plugitright.com/BigFootLevelers.html
As you can see in the picture below, I can get into spots that I could not get into without BigFoot. The back stabilizers (I never use them) are over 3 feet in the air because of the drop off. You can see the rear pumps (boxes next to jacks) also.
