there are two kinds of shaft spine, static and dynamic. wood, glass and aluminum work well to compare static and dynamic spine values. carbon is a very different shaft medium that has a very wide dynamic spine range that doesn't compare to their static spine values. as a result, they typically have a very wide dynamic spine range.
i use beman ics bowhunter shafts to make up arrows that are 29.5" long for 43 to 53 pound bows, with front end weights of 135 to 255 grains. they all work well - for me. no matter what the final arrow build is, lots will have to do with your release, as the shaft's flight can too easily be affected by a poor release, which is a reason for large helical feather steerage.