Dave:
The advantage of the "Stable Lift" system is as follows:
1: you don't need any tiedowns since it cinches up to the bottom of your frame,
2: It is many times safer to load and unload than using the jacks.
3: You can take your camper jacks off and sell them
4: Your spouse will love you since she won't be needed anymnore when you load and unload.
5: It only takes four or five minutes at most to load and unload the camper.
As for the type of rig they can be installed on:
Two years ago they couldn't put them on a unit with a slide. That problem has been solved.
I just talked with a fellow in Olympia this morning that has the same rig I do and he installed it himself, and has made two or three trips to try it out. Says it works great.
My truck is a 2000 Ram 3500 dualie and the camper is a 11. 5 Arctic Fox with the large slide, generator, air conditioner etc. It is heavy, but "Stable Lift" claims weight is no problem.
They have a web site and a toll free number you can call and they will send you a video of their system showing how it works. They are located in Kalispell, MT.
I will be driving over probably in the next two weeks to have them install the system on my truck. It isn't cheap by any means, but the peace of mind is worth it. I think mine will run about $2,200. 00 installed with the three motors.
Good luck.
Dewdo in the other Washington