Samsung j2 is a nice phone in this range.i am not saying that j2 is best, but I think its a best smartphone in this range.this amazing phone have super amoled displya ( 16m colour) and resolution is also quite good 540×960 pixel
Also tha pixel desity is quite impressive its 234ppi
This smartphone comes with android lolipop5.1
Camera quility is also good .samsung gives 5mp back and 2mp rear camera but quality of camera is quite impressive.
Phone comes with 1gb ram and 8 gb rom Overall I think its a best phone in this range .look and style is also good