The 715T is the much better choice if you want a ball from Track for heavy oil. The 920T however is very versital but I have played with mine alot and even my strong drileld one needs to be at 1000 or less to handle as much oil as my 715T did OOB. I had the 715T at 2000 and it rolled out on Route 66 for me, but I have a high rev rate, yet that should give you an idea on how strong the 715T is on oil. Route 66 is not a very heavy volume but it is very long. At 2000, OOB, it was just to much for me. I was able to use the 505T at 4000 though. my 920T at 4000 never picked up.
However if you want something for league that you can find yourself using all night, starting right and moving in as the shot breaks down. Go with the 920T, it is a very good ball that is overlooked. However as I stated if you want the big dog for oil from us, get the 715T.
Mark "scoot" Trgovac
C-G Pro Shop
Youngstown, Ohio
Track Bowling Staff Member
Track HITMAN.
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