I cant vouch for the prime time, but my v2 sweet seems to handle medium to the lighter end of heavy.  Anything too heavy for the sweet and it will skid into the pins, unless the backends are squeaky clean.  Mine is drilled to rev early and turn hard acording to my driller (pin below and about 1/4in rightof ring, CG straight under, PAP 5 by 1/2 up) and that is what it does.  I have been tearing it up recently with this ball on my THS throwing from about 15 out to 7 with quite a bit of revs, but then again, there is a brick wall on this shot at about 6 (the ouside 4 boards have NO oil on them.)