I would recommend Samsung On5 Pro ahead of Samsung J2. The On5 Pro is the most latest edition in between this two. And also it is the most powerful and good looking phone .
8MP primary camera with auto mode, beauty face, continuous shot, interval shot, panorama mode and
5MP front facing camera with palm gesture selfie and 120 degree selfie mode
12.7 centimeters(5-inch) TFT capacitive touchscreen with 720 x 1280 pixels HD display
Andorid v6.0 Marshmallow operating system with 1.3GHz Exynos quad core processor,
2GB RAM, 16GB internal memory expandable up to 128GB and dual SIM(micro+micro) dual-standby(4G+4G)
Removable Li-Ion 2600 mAh battery
Style and Design wise On 5 Pro is best
Range and Feture wise On5 pro is best in this range