Ric - my experience is that the Big Hit (BH) was to replace the Blue Hot Flame (BHF). I didn't like the BH in comparison to the BHF. For the dry to toast especially if there was a little carry down the BHF was a great ball and I still have mine.
The Sonic X Pearl was under rated in my opinion and is a very strong ball. I think the BHF gets through the heads better and the Sonic X has bigger backend.
A ball you should also consider is the Power Groove reactive. Very similar to the BHF but just a slightly stronger cover that holds up really well PK18.
I just punched one up for the dry lane conditions and it performs well.
message me if you need more info.
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Doc
Owner and Inventor of
DOC'S MAGIC BOWLING BALL ELIXIR For more information click on the link below
http://home.comcast.net/~docsmagic/or message me at:
http://Doc65@aol.com