The only Inferno I've had drilled is the Intense and it goes really long before snapping hard on the backend. From everything I've read, the II is the Inferno that is supposed to go the longest of the series as well. I've also seen people go to the Absolute and Original Inferno's because of their versatility and wholeheartedly agree from the reactions I've seen from people who have those two Infernos. Hope this helps!
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