I have ordered from NCZ twice (3.5g and 7g) and tocoolforschool14 once (1g).
NCZ
Stealth: 5/5 - Multiple layers. Vacuum and foil packaging. Simple but sufficient.
Shipping: 4/5 - First order (3.5g) ordered Priority and showed up in 5 days include 2 weekend days. Perfect. Second order had some delays which he made everyone aware of in his profile. My issue was that he marked my order shipped a few days before it did actually ship. I'm fine with delays and good communication, but no reason to move the order from processing to shipped before it actually did. Took me a day or 2 to realize I was not getting what I needed in time and had to order a small amount from another vendor at the last minute. It also did not arrive in time :( If I had known at the time that shipping was delayed I could have taken swifter action to get what I needed when I needed it.
Communication: 5/5 - Responds within a few hours usually. I think longest was like 8 hours.
Product: 5/5 - Some of the best blow I have had. That being said - the cut is ephedrine or at least it was the last time it was tested when he was on another market. It does have a bit speedier edge but I personally like that. Also suppresses appetite more than other coke which makes me believe the cut is ephedrine. I would guess purity is in the 75% range, maybe slightly higher. Decent mix of rocks and powder. I'm sure it gets broken up a bit during packaging/transit since its in a cardboard envelope. I'm sure many will not like the fact that the cut is "active" but I think it synergizes well and gives me the buzz I am looking for with coke. Vendor was transparent about the fact that it is cut and this is the cut ingredient. I appreciate that.
tocoolforschool14
Stealth: 5/5 - UPS overnight so it came in a box, inside was envelope containing usual stealth procedures.
Shipping: 4.5/5 - I went to this vendor because of the delays with NCZ and was really hoping to take advantage of the overnight shipping. Ordered before 2PM CST on Thursday so was expecting package Friday. Shipment was delayed by 1 day and did not receive until Monday. I was personally upset/dissapointed but the vendor is still a lightning fast shipper.
Communication: 5/5 - Straightforward with me when asked about shipping delay. Quick response though we had a minimal exchange.
Product: 4/5 - Definitely good coke but I did not enjoy it as much as the NCZ stuff. One big issue was that it wrecked my sinuses way more for some reason. It was also very "waxy" like and hard to chop up. It kept clumping back together. Not sure what that means really but it made it a pain to rack lines. Advertised as PURE but I'm guessing it is in the 85% range with no idea what the cut is. Whatever it is my nose was fucked after 0.5g. This could also be related to the consistency. I'm not saying the vendor is responsible, but the source must be cutting it at least somewhat. I highly doubt it is 100% pure so I wish there was more transparency about what the possible additives are.
overall
Honestly I would rank both vendors about even. If you are someone who is adamant they dont want anything "active" in their coke go with tocoolforschool14. I have a slight preference for the high as well as the shipping with NCZ. I prefer USPS to UPS but that is just a gut feeling with no factual basis. Express shipping with USPS is 2 days for me as opposed to overnight with UPS. Barring vendor delays I am usually waiting longer for BTC to get into my wallet than on packages.
I believe with tocoolforschool14 his profile states that if an order is place before 12pm CST it will go out the same day. So that is probably why your order didn't get there when you thought. Could be wrong though