spot on with the sport condition statement
volume tends to lighter on these patterns it seems, save a few of them
lighter vollume makes you adjust constantly, also matters what surface you and everyone else on the pair uses
to much surface to start and you can burn up the heads, which makes a tough shot even tougher.
i bowl a fair amount of different sport patterns, equipment wise:
a few for short, a few for long
4,5,6 for medium patterns with varying pin-pap distance and mostly drillings that favor arcing predictable back-end motion.
talking surfaces, always go to the lanes shiny, you can adjust down from there, if its to dull during practice, then it goes back in the bag, not useable...
I'm partial to Ebonite brands, have had many over the past 5 years and i adjust surface plenty, no issues with anything "dying" or not performing.
good cover maintenance takes care of that
great medium pieces in no particular order
505t
503t
gamechanger
508a
cyclone
and all take surface change well with exception being cyclone (blk/gold) and 508a, for me, they are better left OBB
good heavy oil pieces
715t
716t
challenge
vow
outburst
my $.02...............