You tell 'em flyfisherjoe!
If you only have 25' of line out at any one time any reel will do. It's when you cast long and/or get into the backing that a 'true' large arbor rules.
With the conventional, narrow spool the O.D. changes much quicker as line is drawn out. This changes the drag setting, demands much more cranking to get line back and causes more coiling of the line. These are the facts, like 'em or not.
For small trout, run what you brung. For anything larger a true large arbor has its benefits.