Quote Originally Posted by Grog View Post
Sora is actually the lower level in Shimano.
To clarify: Shimano's road line is--from low to high end: Tiagra, Sora, 105, Ultegra, Dura Ace.

Do you wonder whose job it is to come up with these names?

I'm just embarrassed because I thought she was asking about gearing, so I wrote a dissertation on that. In rereading her question, I see that she was expressing confusion about groupsets. Or maybe not. It's not totally clear.