One hack's observations:

The Chrome/Yellow is the skid-flippiest ball I've ever thrown, even drilled weak (5" pin-to-PAP, CG stacked, no XH).  If there's any dry on the lane, my Chrome/Yellow will find it, and change directions instantly.

My Blazing Inferno is clean in front, but it picks up the midlane *a lot* sooner than the Chrome/Yellow.  I have it as about two boards weaker overall than the original Inferno, and that's all on the back end.

Personally, I don't think either ball is particularly well suited to drier conditions;  I've had better luck with the Monster SlayR on dry.  However, if what you're looking for is something that lets you get your feet deep and will recover from just about anywhere, the Chrome/Yellow might be the ball for you.
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Horrid in Doubles, torrid in Singles...
...that's The Curse of Dusty.

I've never thrown the Viper;  I've only seen it in action, so I really can't give you a comparison between the two.  However, I can say that the reaction that I get from the SlayR is unique--clean in front, but almost urethane-like in the way it handles the dry boards, with *great* hit and carry.  I have it about five boards weaker with my feet than the Bruiser, and about seven weaker than the Chrome/Yellow, all on the back end.

Hope this helps.
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Horrid in Doubles, torrid in Singles...
...that's The Curse of Dusty.