Firstly Congratulations to Gerald and Maverick and their Purchases.
Regarding parking sensors, I feel the sensors with distance indication on the rear view mirors are more than sufficient for parking/reversing. Camera is a"good to have" thing but in terms of usage, not very much compared to sensors with distance indicators.
Sensors are a worth investment to make in sedans. I feel it is very difficult to be sure that nothing is coming your way, especially if it is too small to be seen over the shoulders or in the mirors (small poles, boulders, even animals or small children). Also you always have blind spots while reversing so there too these sensors come in handy.
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