I purchased the jp40 about a month ago.
They had a covid special on their website and I got it for a very reasonable 400 i think.
In low it pulls 2.3amp and high about 3.5 amps.
Came with a cover and it is quiet with a small fan running when the compressor runs.
It disperses a bit more heat than the Engel mu40 I had in my off road camper.
I have a short video on my YouTube channel installed in your new trailer.
Channel name is ebrabaek.
Longlegivity I can't speak of but so far so good.