I have been getting by with Beman Bowhunters, full length.
.340s out of my 64ish# RER longbow and .500s out of my 57# ASL. The ASL is not even close to center cut and is tuned awesome with the 500s, but I had to really dump front weight for the 340s to bare shaft decent on the RER. I am looking at trying some 300s with a bit of weight up front next.
As an aside, to show how bow design changes everything, I have another moderately reflexed longbow, around 80# at my draw, with less center cut and a built up plate, and it shoots the same .340s fine (have not bare shafted this bow).
CHuckC