15 yards and under, it really does not matter in my opinion. At 25 yards or more, I find the 147's work much better; most of the highest scores at the 35 meter shoots at the NSCC this year were with 147's, mine winning both matches.
That being said, if you are looking for accuracy and not the cost, you may want to consider a 124 HP. I am planning on working with them in the spring to see what the accuracy is like; the wieght is further back and the are as long as a 147 (same contact surface), so they should have the chance of working well.