Randy, here's another point of view....free, which might be exactly what it's worth...
I shoot longbows from 55# to 61# at 27". When I started with carbons, I didn't want to cut and tune, so I ordered some 29" Carbon Express 250's.
I have shot these through all of my longbows, and they fly well with 225gr to 300gr up front...
However, after reading about the Arrow Dynamics shafts, I have been shooting them pretty much exclusively for the last 3 months. A 29" arrow works with 225gr to 350gr up front...have used 5" shields and 4-fletch, 4 inch low-profile bananas, all with good results...
The real kicker is that I have shot these arrows from recurves and longbows from 35# to 65#, cut past center and cut to center, and the flight characteristics are great from all...plus, the taper on the AD's seems to make them easier to get a high FOC....
The Arrow Dynamics are kinda pricey, but I feel they are one of the most versatile carbons out there....
YMMV
Kevin