Are you referring to something like the LevelUp or BigFoot systems? Auto level? Definitely lots to chose from, but most can be added. Kind of a matter of preference. We've had HWH, BigFoot and the Level Up. Can't say one is really any better than the other. They all have their pros and cons.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.