If you have a hefe, you best drink that thing now! That's the only style I'd worry about. A guy at work had a Hooegarden(sp?) that was in his basement for 7 years. It pretty much had no taste, but it didn't taste bad either,and it didn't make me go blind.
As for style and aging, without seeing a list of what you packaged it'd be hard to tell. Generally the stronger(ABV%) the beer the longer it'll improve, but there are some exceptions.