The Infinite PhysiX features the ReX Pearl coverstock that debuted on the Dark Code, and which comes at 4000 grit over the strong and dynamic asymmetric Atomic core, which comes in at a 2.48 RG, .053 differential, and an .017 intermediate differential in 15 pounds. For me, the Infinite features a bit of a different shape from the previous balls in the Physix line. The other PhysiX balls seem to be more angular and slightly forward off the end of the pattern, and while the Infinite is stronger on the backend than the Proton at least, it's a very round and continuous shape. The Infinite is very similar in strength to the Dark Code, but is longer and sharper, so despite looking nearly identical on paper, there are appreciable and noticeable differences. The Infinite is a nice ball down from the strong solid asyms in the line like the Gem, Proton PhysiX, and Reality, but a ball up from balls like the Nova, RST X-2, and Rubicon UC2. It will fit best on medium heavy to heavy conditions, and while I think its overall reaction makes it best for the first ball out of the bag at league, it will also be useful on medium heavy lengths and volumes of sport patterns once transition sets in and you have to open the lanes up.
