Don't know any one here but JEBar at RV.net added it a year or two ago and he is a big fan. There are a few threads over there on the Big Foot system. We just added the Reico Titan electric leveling system to our 5er and so far I really like it and am a very happy customer.
If you go with a hydraulic system and you have a seal or hose failure you will not only have a physical mess from the oil on your hands, you can't use your system. The electric system we have has ways to deal with a motor issue so that we would not be stuck and wouldn't need a service call.
Hope this helps
Steve, Berne and Rascal
2012 Jayco 31.5 RLTS
2007 F250 Powerstroke