Originally Posted by Barrettscv

I agree that 3x11 is not a huge improvement over 3x10. The primary advantage of the 11 speed cassette is the 16 cog on both the 12-17 and the 12-29. The 16 cog might be missed by a expert cyclist who wants to stay in the 85 to 95 cadence range while fighting a headwind or climbing a 2 to 6% slope.

The 11-23 includes- 11,12,13,14,15,16,17,18,19,21,23
The 11-25 includes- 11,12,13,14,15,16,17,19,21,23,25
The 12-25 includes- 12,13,14,15,16,17,18,19,21,23,25
The 12-27 includes- 12,13,14,15,16,17,19,21,23,25,27
The 12-29 includes- 12,13,14,15,16,17,19,21,23,26,29

I have a 3x7 on my 1983 Trek, It has 52/40/28 and a 13-24 freewheel
I have a 3x8 on my 1985 Serotta, It has 52/42/30 and a 12-28 cassette
I have a 3x9 on my Monstercross bike, It has 48/36/22 and a 12-27 cassette
I have a 3x10 on my 2012 road bike, It has 50/39/26 and a 12-27 cassette
I have a 3x10 on my 2012 Cyclocross bike, It has 50/39/26 and a 12-30 cassette

All of these triples can keep a tight cadence on flatter sections and provide the bail-out gearing I like to have on hilly century rides.