Hmmm, now I am not sure again. Shimano's 9 spd double was 22/36. So I know the 9 spd stuff will work with 14 teeth diff, so I guess this means the 24/38 will work too. Just wonder if I go with the 24 if I will regret not having the 22 on the low end, although it would be nice to get the 38 on the high end. So, I guess I am still leaning towards 24/38, but would love more input.

In summary, even though I am doing custom, stock cranksets for shimano 9 speed doubles were 22/36 and for shimano 10 speeds doubles 24/28. Trying to decide which type of custom rings to order on my custom crank system, to use now with my older 30 pound 9 speed MTB, and in the future with a possible newer 10 speed set up.