The other thing is, i can see a difference in the grain size (unless that is a difference in distance).
If you going for a deep sand bed, want sand for a refugium etc grain size, and difference in grain size between two batches, ESPECIALLY if you want to do something specific with it, or even like the look of a specific size, will not achieve the same result as a sand that is recommended for the purpose and will achieve the best results.
So im with you NiCd, dont compromise.
Although i do agree with matt, in that when in the tank, and washed before it goes in, you may not actually notice a difference, but if you are aiming for it to do a specific job, or look a certain way, and your not happy with it, then its best not to use it.