Hey Mate,
My family and I are current UEV-490 owners and we couldn't be happier with the unit. (bought new 2018 model)
Setup effort depends on what you call effort. We just came back from cape york, 3 weeks constantly on the move, plenty of one nighters, not a problem. Sure, its not a van where you pull up at the camp spot, open the door and grab a beer from the fridge, but its not as onerous as Aaron makes it sound. From time of positioning the trailer, 15 mins to pull the front bed out and setup the annex.
We also travel with the main bed made up so the kids can climb straight in if we pull up late.
We are a family of 4, we all slept comfortably for the 3 weeks, never got wet, no dust in the cabin from the trip. the 490 towed beautifully behind us up the PDR.
As for the 240 v issue, this was resolved by a recall or there was a simple fix if you CBF with the recall. Plenty of info about it if you google it.
PM me if you want any info
Cheers
JD