The above poster said the pretty obviously, however it is a weak answer. I mean sure if you got a trinket that only has a strong MP5 on it, to a trinket that has a weaker MP5 on it but something extra and you have no mana problems you take the vial. But if he has no mana problems, why would he take any of those two above mentioned trinkets anyway?
I mean sure, the vial can be a bit fun to play around with, an extra healthstone, an extra instant heal while running perhaps good on some encounters, but it would be more of a fun trinket than something I would use.
So I would go with the brooch. If "mana is np" I would switch to a completely different trinket than the vial.
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