I have bought all 3 grades mannlakes offers, and to be honest I dont know which are which. Budget had a few that i sealed knots up with glue, but none were falling out, just being paranoid. Once I painted them, I can't tell the difference.
I won't buy any but budget now on, they are all good.
An update now that they are in hand. The cuts are better than the ones from Brushymountain that were premiums/commercial. There were none that were blown out (Where they run the material through the saw without a backer). There are some knots, none were loose. Both sides were planed, not rough on the inner. A few pieces were knot free. I got a complete deep (four pieces) that has a knotty pine almost birdseye look to it. I will tea stain that and seal it with poly and sell it as a part of a complete presentation hive. I have sold almost half of the stock I bought and and am close to completing my payment for inventory. All profit from here. What does not sell will get built into yard stock. I will paint them and prepare them. Some I will sell as complete hives for a better profit, everyone else goes in the yard next spring.
Unfortunately I wish I had bought a few more pallets the last sale. The boxes I got on the mill run were actually quite good with a lot of 'perfect/clear' ones. Trick I found was making sure that I sorted the pieces by height as the boards shrinking over time (I didn't get em all assembled till a few weeks ago so they had plenty of time to shrink/expand) made the fingers hard to assemble otherwise. But if you just sort as you go by size, they work much nicer. I know, they have the 'budget' 36+, but I don't want 100% defects. I don't mind fixing a loose knot once in a while, but not interested in fixing em all. The Amish were willing to give me a good price for the quantity, especially since I wasn't in a hurry and they could do them in the winter.
That being said, the nuc boxes I got from Humble Abodes were top notch too (even labeled budget), though I found their fingers to be VERY tight. Sorting wasn't necessary here as I assembled most immediately.