I don't think 1/8" vs 3/32" chains are stronger than the other, and I honestly can't believe any of us are stong enough to break either one. I use an 8sp chain on my SS, but when that one wears out I will be swithcing to a 9sp. 10sp is too narrow (even though it will work just fine for 3/32 chainrings and cogs). A lot of guys have been reporting that 10sp chains strech very quickly. THe KMC X-SL is a very nice chain, and light. I used a SRAM hollow pin 991 chain (I think that is the right #) on my road bike with great success. Road chains are significantly quiter than 1/8" chains when the chainline is not perfect and I honesly quesion the usefullness of a 1/8" chain over a good road chain.