Oh yes I've looked but I guess we don't have demo days at any place near here.
I hear good things of these 2, and I see A LOT of bowlers using the Corner which is why I'm kind of tempted to go with the Mutant LoL plus I was recommended the Mutant, but again, recommendations didn't work for me before either... so I've looked into it and these are the 2 best balls that match my needs. There were others, but in pearl coverstocks and those kind of balls leave me too many corner and solid pins!
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My Arsenal:
Hammer Black Widow Sting
Storm Virtual Energy
Columbia White Dot