After doing a lot of reading on the forums searching for a decent coke vendor, I decided to try out what Mastery and uncutking have to offer. I ordered 1g and 3.5g from each (within 2 weeks) on Alphabay. I ordered uncutking FE. and Mastery Escrow.
Stealth: Mastery's stealth was much better than uncutkings. If you opened uncutkings you wouldn't immediately see the product but it would take minimal effort to find it. On the other hand Mastery's required scissors to even open. uncutking if you're reading this, you might want to improve your stealth (I'm not a vendor though so it may have been sufficient - it arrived after all). There was no odor from either pack until I opened the last layer. They both smelled strongly like gas.
Shipping: Both packs came fast and within the posted shipping times. No problems here.
Appearance: Both came with a lot of large chunks. There was some powder at the bottom of the bags, but it looked like it came off the rocks. Uncutkings was a little bit shinier.
Quality: I ordered from uncutking when I first created my account and the quality was good. Not the best I've had, but worth the money. This time I'd say the quality went down a bit. It did not numb my mouth, felt a bit jittery and my nose hurt after doing a few lines.
The coke from Mastery didn't really numb my mouth when i rubbed some on my gums. It didn't feel jittery, and my nose didn't burn afterwards though.
I'll probably try out uncutking again and see if its better this time, but right now I'd rather order from Mastery. At the very least you should expect the packs from either vendor to show up without any scams.
Phew boy, it seems like mediocrity is as good as it gets domestic-wise.