I really is personal preference, I have 2 panfish sweethearts right now, both 24 inch. I prefer shorter rods, the standard on these is 28.
The powernoodles are awesome as well for panfish, very light tip on them but a solid backbone.
The quiversticks are also one to look at. They have a quick tip-a bit heavier than the powernoodle but lighter than the panfish sweethearts. $85 a pop for these, but they're very nice rods. They have titanium guides on them, which are also available on any other TB rod.
Like others have said, the possibilities are endless, they're build any rod for you, with any guides they offer at any length, with any handle. You can also customize the guide wraps and accents.
No, I don't work for TB or anything, i'm just extremely impressed with the stuff they build.