so, would a casual, 130lb rider be able to benefit from upgrading to the Grand Mighty crankset over the standard 75's? will they have a longer life? a lot more responsive?

they will ridden on the street ONLY. this bike will never be on a track. they're going on a Bomber Pro Keirin frame if it makes any difference...

i'm building up a bike and was just wondering if they were worth the extra dough?

thanks.