Thanks for the input on this!
You're right: the situation is what makes the call...
31 footer, and I have access to a sewer drain on my property... but it's about five feet higher than our driveway, and impossible to get the rig up to that level (Unless Lippert makes a model that I'm unaware of!)
We have power and water available by the drain also.
To drag a Caddy over to it would also be pretty easy: perhaps forty yards on level blacktop, and a small hill-climb on grass...
Given that circumstance: which one do you think might be handier?
Or perhaps more versatile?