I am looking for an aftermarket backup camera system not for my RL but for another car.

What I want for my other car is a system whose back-of-the-car camera displays either on the upper interior mirror or on a separate dash mounted monitor.

There are many such systems listed on the internet. However, my technical knowledge is too limited to determine the best one.

Thus, I ask for recommendations from a member of this forum who has actually have had this type of system installed in his/her car.