The HRLV-MaxSonar-EZ2 is a good compromise between sensitivity and side object rejection. The HRLV-MaxSonar-EZ2 is an excellent choice for applications that require slightly less side object detection and sensitivity than the MB1013 HRLV-MaxSonar-EZ1.
The MaxBotix low voltage MB1020 LV-MaxSonar-EZ2 offers very short to long-range detection and ranging, in an incredibly small package with ultra low power consumption. The MaxSonar-EZ2 detects objects from 0" to 254".
The MaxBotix high resolution, low voltage MB1013 HRLV-MaxSonar-EZ1 is a great choice for use where sensitivity is needed along with side object rejection.
Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor.
YDLIDAR F4 LIDAR is a 360-degree two-dimensional laser range scanner (LIDAR)