A few of them are really very nice, though, each is good, but I really like a couple of them a lot! I have a custom essay review to do and a few of the designs could be used with it as well. Indeed it is nice that you have put together all of them.
Gumroad – SP Quixel 325 Hardsurface Height Alpha plus Tutorials
Sci fi brush and alpha set for Quixel and Substance painter, 325 brushes and height/alpha maps, all 2048×2048 16bit in tiff as well as jpeg and png. 2 Video Tutorials are included – Creating alpha/height maps from high poly to use as brush – Customizing Alphas