Here's the thread with the one before/after pic I posted showing the light output, but none yet from any others here that have installed them -
LED Back-up lights
Everyone seems to like to take pics of the lights themselves to show they are brighter/whiter than incandescent bulbs, but very few, if any, take before and after comparison pics of the actual light output.
I have had LEDs inside and outside my house for years - I am in the process of converting my last few halogen shop lights in the garage and basement to LED. All of my flashlights and weaponlights have been LED for years. All of my trailers have LED lighting. I find the low beam LED headlights on the 16/17 PIU to be pretty darn good. The only area where things are a crapshoot with LED is when the housing and reflector are optimized for a different type of bulb/light source. It can be, and often is, a crapshoot as to what the light output will look like if you just swap an LED for an incandescent bulb. You may need to try a few different types to see if the light output is same, better, or worse. If you've ever done any LED retrofits to flashlights you'd know.
As far as vehicles, I have converted a few brake and turns to LED because they do light micro seconds quicker than an incandescent and can be brighter to others, so I think they are good from a safety perspective, but the few reverse leds I tried didn't seem to make much of a difference to me and I haven't gone down the rabbit hole of really testing a bunch of different LED reverse lights myself. I may end up looking for some auxillary reverse LEDs to mount by the license plate or hitch as those will really provide usable light - question is whether to wire them to the existing reverse lights or put them on one of the aux switches for manual control.
Whatever you or anyone here ends up buying, make sure to take and post before and after pics that show if the light output behind the vehicle is better/same/worse.