Ok I had a 607 last year and it was the flippiest ball i have ever  thrown. I am now bowling on synthetics and last year was wood. I would  say the oil is about the same the only difference is the synthetics get  the backends cleaned better. I am wondering if the hell raiser is as  flippy as the 607 of if i should just buy another 607 and call it good?  Also if someone who has thrown both or seen them both could compare the  two for me i would greatly appreciate.