I've had two Infernos, the Absolute and Ultimate and both have died on me. I clean the balls after every set. Soak them after every 50 games or so. I've had over 15 balls and none have lost their hook as noticeably as these two. My proshop guy and many of his customers have said that their Ultimates died as well. I dont know, but I just dont like the Activator coverstocks longetivity. I love the reaction initially but after that, its gone.
For that reason, I'd recommend teh Passion. I've seen it in action numerous times and it is a strong ball.
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If it weren't for electricity we'd all be watching television by candlelight.