I know what you mean...But - I agree with arrowflynn on the 9 gpp,
my tall tines recurve(50 lbs) shoots a 540 grain arrow 175 fps...I've been shooting the same arrow out of my BW Osage(49 lbs), but it only shoots them 162 fps...I've been shooting my tall tines some so the BW with the heavy arrows seems like a dog....I dropped down in arrow weight and got my BW longbow shooting the same speed as my Tall Tines recurve and I really like that extra speed - even though, like you said, the heavier arrows 'feel' better out of my longbow...