I have logged 500 miles with mine and yes the screen is big.
Yes it has the lane assist for exits.
It has strong audio.
As with any GPS you have to watch your setting (road preference) and which route it takes you.
The RV Warning does work, I found out at 3 AM on Friday and turned around.
I too have gotten use to the speed recommendation and speed warning.
I like its campground data base which references AllStays which is great on the Iphone.
I have not used their other check list items much. With those capabilities on all the other smart devices who knows.
I feel the Video input was an after thought. They did not include any interface plug or directions and do not use a standard pin or pin out logic.
DIESELBOSS can help take care of that problem.
There is
NO audio interface to go with the video. My 10 year old GPS has that.
I bought this one because it had the campgrounds (like) and the video for my back up camera. With the limitations of no interface and no audio I claim that should not be a decision factor. It was with my purchase before I found the limiters.