I personally love the X-Treme Heat, but it is definitely stronger than advertised with the 2000 Abralon finish. You need head oil for this ball and offers a strong, continuous motion in the backends that does not stop. The original Heat is very clean and offers a BIG backend motion that most bowlers like to see.... but with the X-Treme Heat, the coverstock is stronger which allows you to use it on heavier medium lane patterns, and does not hook too early on the longer/heavier patterns that the stronger (Asym) balls do.
This ball is perfect for the heavier medium or longer lane patterns where you need control in the backends. I do know that when polished this ball does roll great too with the continuation in the backends, but there are other balls out there that do that.
This ball matches up better for those that have higher ball speeds or more rev rate.
Hope this info helps...