I have a Formula 16T cog, and an EAI 19T cog.
The Forumula looks like a $10 cog. It works, and has held up to a month of me.
The EAI on the other hand seems like a cog I expect to have for a VERY long time, I'm pretty sure it'll last through any abuse I can throw at it, and it was made in the USA. I'm fine with the extra cost on it. And I'm pretty cheap.
Cliffs: Formula cogs seem cheap, and are priced accordingly, IN MY OPINION.
I will take this into consideration! Thank you for the advice. I guess Ill go for something of better quality