With the extra insurance a barnes gives, being I'm human and prone to make a mistake, i"ll spend the bit extra on them almost all the time.
I have had good results in the X39 with the 125 BTs though in the nephews gun. Nothing that really bothers me, but the Barnes gives even more insurance.
I still don't get folks running the little 300/221 supersonic other than the gun writers all hyped the thing up. And hte X 39 is old and boring I guess.