I'm thinking of getting either one of these balls, Tornado Blk,Red,Org or the Black Ice. When I looked at the specs, it says that the Tornado has a Length of 13.5, a Hook of 23 and recommended for light oil. The black ice is 18.5 length, 22.5 hook, and recommend for medium oil. Now is is just me or on medium oil wouldn't you want something to roll earlier and hook more, like the tornado instead of the black ice? What's the deal?