I have four bikes that use three distinct drivetrains.

All of my bikes have triple cranksets. Two of the bikes have Shimano 105 triple cranksets with ten speed cassettes. The other two bikes use Deore triple cranksets with nine speed cassettes.

Touring and trail riding with a 48, 36 & 22t cranksets and a 12-27 or 11-32 cassettes;



Touring only with the same 48, 36 & 22t crankset and a 12-27 or the 11-32 cassettes;



Fitness road-riding, faster gravel tow-path, century events and commuting with a 50, 39 & 26t crankset and a 12-30 cassette;



Fitness road-riding, group rides and century rides with 50, 39 & 26t crankset and an 11-23 cassette;



The 3x10 drivetrains with 50, 39 & 26t and an 11-23 or the 12-30 cassettes have very tight gear spacing and very small changes in cadence with each shift.
The 3x9 drivetrains 48, 36 & 22t and a 12-27 or the 11-32 cassettes have moderately tight gear spacing but the 22t provides improved climbing with a heavier tour.