Originally Posted by
superfred
I dare you to rank car brands in a linear scale from worst to best.
Now rank chocolates.
And handbags.
Do you see a pattern now? You are asking for a objective answer to a subjective question.
All those things may be subjective however when Shimano builds and sells group sets the Sora is a basic set. The Tiagra is a step up, the 105 another step up and so on up the line. You can specifically rank them as to where they fall in the model line. I didn't know where to find the proper ordering. Someone directed me to a wiki with that information so now I can read specs and know where components fall in the line.