I have my pure physics drilled 45 x 4 x 20 with a P4 weight hole, which is a length layout with a strong backend for me. I wanted it for heavy or longer patterns so I could keep my speed up and still have a strong entry angle. I haven't had a ball since the VG that give me such a different look then any other equipment I've drilled. It has a very heavy midlane roll and it doesn't seem to sacrifice pin carry to do it. I can't use it when the heads dry out or there is too much friction to the outside (like a THS), but I love this ball for tournament conditions.