Originally Posted by AndrewP
Read the reports of users. All the complaints of the SORA shifters are about ease of use, not unreliability. The reports on the SORA rear der, are not good, but I am talking about the lever mechanism. There are many reports of unreliability of the Tiagra levers.
Doubt it.
If there was a problem Shimano would have pulled the product line.
They enjoy the dominance of the component world because of research and testing.