I draw 27", so it's right at 45# for me. I am shooting my trusty Carbon Express Thunderstorm SEs (predecessor to the Heritage 90), with a 125 gr point. These arrows shoot awesome out of just about every bow I have tried them on.
I strung her up with an 18 strand Fury string with one small set of rubber whiskers. After just a little tuning, it is quiet and very quick.
I will get my chrono out in a day or so to compare it to my other bows, but I know Blacktails are great performers.