I purchased the Animal Untamed a few weeks ago and all I can say is that it is hook monster. I used it in Reno and it handled the heavy oil on the outside and recovered strongly to the pocket. On a THS it seems to be too much ball unless I go deep inside and swing it, then it is fine. The house I bowl in during the summer is putting out a heavy oil shot and while everyone else is complaining, I just pull out the Untamed and go. I am averaging 220+ while everyone around me is struggling. I shot 279 / 749 during my first week with it. I personally do not like particle cover stocks because they wear out so quickly, so a strong reactive is the way to go for me and the Untamed falls into this category. Sorry, I cannot comment on the Extreme and the Ultimate Inferno.