My son complaining that he needed a ball with some stronger backend, we bought him like new 2.5 off of Ebay. Fitted it up Friday night, Saturday morning for youth he shot 620. It was his 4th 600 series of the season. 2 with his Evil Siege 651 & 605, and 1 with his Mission 2.0 a 615.
He definitely believes this ball fits what he was looking for.