I personally think in this situation, lenses wouldn't matter as you're going to be using a flash for this, or some lights, and a tripod. On the matter of focal length, it'll be a matter of getting closer to the product. Regardless of those two, even if a bad photographer does the shooting, it wouldn't matter too much not because of post processing, but because of the fact that you're only going to have to resize the pictures to 360x360 pixels(72dpi monitor @ 5 inches). But if I were to choose, I'll take the 55-250 because of not having to get too close.