I checked on them through Amazon and was sold out.so spent hour looking at micron size and was a little confused because of all the diff measurements but on the micron size is the 75 where your gonna get your best product or the 120. My set had the 66,96,120
That'll work great. Depending on strain the primo stuff may end up in different trays. The stuff in the pics above I combined the two sandy ones and I'll decarb the other stuff. It would be a great bowl topper, but I have the better grade stuff so it'll end up in some strong-ass edibles. Here's a chart I found.
The 120-bag it may be trichomes that are fat and greasy but it'll still have leaf trash in it. So it's a toss-up on whether or not it's worth the effort to clean up. I have tried putting it in a tin with a 62% rH pack so the veg matter rehydrates a little and resifting it got a bunch out.
Here's one helpful for sorting through the stuff on Amazon. You can find random non-weed stuff to use. Industrial grade baking stuff is cheaper than something labeled as a weed product.
I waste nothing. It goes to decarb or back into the worm bin to eventually feed back to the plants. What gets saved is based on your stash, and there's no right or wrong about it.