Originally Posted by
Sir_Name
The thinner the chain (higher number of speeds), the more important this becomes. 10sp shimano is...finicky.
This forum is full or unqualified statements like this. This is a subjective opinion with no explanation.
My experience is you can break a shimano chain as many times as you wish. Just be sure to only break factory pins and never a replacement pin and always use a replacement pin. I use shimano chains on campy, sram and shimano bikes. Why? I feel personally that they are quieter, shift better and last longer. That is my opinion based on my years or riding and time spent working on 1000s of bikes in a shop full time from 2008-end of 2011. Have things changed? Possibly and probably, but I am sure new 8/9 and 10 speed shimano chains are the same as ever. Use a replacement pin, it's super easy to use, follow the instructions and you won't have any trouble.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear