Just mindblowing. The 930T and the Virtual Energy hooks more that the 715A. Holy news flash....
Why are you comparing those two to a 715A in the first place? You might as well make a post crying about how a Roto Neptune can't hook 40 boards, but your buddy that has a Cell can...
I don't recall anyone saying the 715 is the all-out hook monster. It is a medium lane condition ball(in terms of length and/or volume) at best. I've tried a 715A, using the same layout that is on my 2nd Virtual Energy (60* 4.5" 25*). It allowed me to play not only tighter, but further right and it worked quite well. I'm also high-rev, decent speed, and average over 220.
"Extreme hook" as you so eloquently put it, isn't always the answer-all. but then again, someone at your level should "know that"...
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'09-'10 Arsenal completed!
http://smg.photobucket.com/albums/v690/Phoenix_RsX/Arsenal/You may be the better bowler, but my car would blow the doors off of yours.