Originally Posted by Belteshazzar

But still, outside of one lower gear when used with the same cassette (and less than that when compared to a compact with a wider cassette), as I look at charts of gain ratios I'm not yet seeing what a 50/39/30 triple buys me in the age of 2x10sp compacts. Are the chainring shifts avoided by having the 39 cog really that frequent, and is shifting chainrings really that much of a problem? Yes, you can also get smaller increments- by switching chainrings and always having to think about which nearly-redundant gear combination is ever so slightly higher than the other. Otherwise, the only difference between the gaps in a 12-30 cassette like the Domane triple uses and those in a 12-32 cassette like what Leinster suggests using with a compact are minor ones at the lower end.