Create texture in photoshop UV or inside 3ds?

Guys, are you doing for every model normal bump map just for simulate smoothed edges?

I mean, if I only have box - do you make first high poly smoothed edges box and bake normal bump map, or for smaller object you just use chamfer, smooth and use model like that?

Example:

box with normal texture map but without nomal bump to simulate smoothed edges:

box with normal texture map but with nomal bump to simulate smoothed edges (created from high poly to low poly with cage projection):