We have a 4114. From the story I was given probably the first. Not that that means anything.
I like it for versatility and the living space is good. Almost the same floor plan as a 3911.(that's what we were shopping for originally)
Had to return it a few times for warranty but I guess that's almost a normal thing these days. I've gone ahead and fixed some things myself and still plan on moving the pull handles inside. Defiantly doable although I was given a story from dealer and factory on why they put them where they did. Basically in long version it was laziness.
Lipperts pad that controls everything is a nice gimmick, but I would still like to have switches for lights and HW, pump, etc. I told the factory rep to put in a light switch in the hallway so when entering in the dark you don't have to trip over whatever may be lurking in the dark left from the fur babies (scrunched up rug, shoes or chew toys) to find the pad, turn it on, scroll through the light category to fin the right light you need to step foot in the house.
Basically the pad and solid mount screen are a pain imo.
The KZ forum is sadly lacking of any factory backing and is usually quiet.