RE: IBO speeds @ less than 70lbs for Bowtech Pro40???
DLE, I didn't mention the smoother, easier draw of the 04 Dually when compared to the 03s. I shot my 03s at 55-57#. My 04 at 60# is easier to draw, IMO. I'd get the 60#er if I were you. I've noticed when shooting lower weight bows (under 55#) the holding weight wasn't enough to feel a good solid wall. More holding weight made shooting easier for me. But try both if you can. It may not be that way for you. And of course, this is just my opinion.