Originally Posted by
SyntaxMonstr
I bought a 12t Gigas cog off that used NJS parts store on eBay and absolutely love it. It's held up as well as my Dura Ace ones and is really solidly made. Dunno that I'd spring for it new, but couldn't find anything below 13t that I could trust within my budget. Cost me like $25 used with the lockring.
The 12t Gigas is steel. The others are alloy and much, much more expensive, around the same as the EAI Gold cogs. I actually bought one used years ago, but the threads were ****ed, so I was unable to try it. They have some kind of surface treatment on them that's supposed to make them last. Just curious if it actually works.