This is the first time I've used Mega Fastener 18g nails, but this is the second time I've used this brand. I've had flawless results with the previous ones so I decided to take a closer look at these as they make up about 1/3 of the famous brand nails. I placed a row of these nails side by side and zoomed in to see the differences. In the provided photo, the nails of the famous brand look perfect. They are very uniform and very expensive. On the left are the Mega Fastener nails. You can definitely say that the tools on it are not that good because the heads have a lot of flaws in the row. However, I've run them in rows through Craftsman and Bostich 18g nailers, I can't tell any difference once they're in the tree. no traffic jam, nothing. There may be differences with the steel, but since I glue almost everything, I don't care. So instead of paying almost $20 at the store for 2,000 nails, I'm happy to give $15 for 5,000 of them.