Brick, I've had very spotty experience with 14's - 4 balls only.  I had one of the Monsters that, once in a while, was good, but mostly hit like junk.  I had a Roto Rush that was great, always - tremendous hit and carry.  The other two I won't even dignify with names (if I could remember).  They were forgettable, as was their hit and carry - zilch.  

We often talk about matching up with balls and conditions.  I believe that the extra pound can help you out even when revs/speed don't exactly match.  But I think this is very critical when you go down to 14, much more so than with heavier balls - the lighter you go the more necessary it is to match revs and speed (didn't Charlest have a minor dissertation on this once?).  So, do your research, if you have a "go to" company I'd stick with them until proven otherwise.
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"A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal." Oscar Wilde
Ragnar sure likes to throw his purdy Uranium Buzzsaw.

I agree with Rags here. Your pro shop operator should be able to help you,depending on the knowledge that he has. If you don't feel comfortable then drive to a good one on a weekend when your time constraints might not be as bad.
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Chris

I used to throw 14#, and I know other people who throw 14#, and the difference in carry is not on pocket hits. The difference is light, or heavy hits. On light hits 15# scatters the pins much more, and on heavy hits, 15# leaves more splits, since it drives harder. That has been my experience with 14# and 15#.
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16 years old, and proud of it! Still not mature either!