I went with the Furrion high speed observation camera. It works great and have not lost any signals. I can see both lanes and see what is coming up from behind me, and works well backing up.
I had my dealer do the install, but from what I've read it is pretty easy to do. If your trailer is not already wired for a camera, you will need to tie in to one of the marker/clearance lights for power.
https://www.amazon.com/Furrion-38155.../dp/B010XWNFOM