(I'm assuming you're referring to a spinning rod)
If you're looking for a rod to cast jigs with (95% of the time) ... then look at the 6'6" - 7'6" range. I'd also recommend a fast action tip & nothing heavier than a med-lite power.
I used a Sam Heaton 7' for years ... then replaced it with a 6'6" ESP PowerLite rod. The Sam Heaton has a parabolic bend (bends like a C), whereas the ESP has a very fast action tip & bends like a J.
I field tested rods for ESP ... and subsequently replaced not only my jig casting rod, but also my dock shooting rod with ESP rods. But, like what was said ... what I like may not be for you. And if you're going to be using a slip float at any time ... ESP rods are not what you would be looking for, as they have micro guides, which are too small for a bobber stop to pass through easily.
Hands on shopping is the best method ... as you will not only be able to find a rod that feels good in your hand, but you will also be able to match a good reel to it so that it's a balanced outfit. You can survive having a outfit that is handle end heavy, but a tip end heavy outfit is going to wear on your wrist/arm in a short period of use. If you can lay the rod/reel on your outstretched finger, where the blank & handle come together (on the front edge of the handle's foregrip), and the rod/reel will balance there ... then that rod/reel combo will feel & perform as an extension of your arm/hand. A wide spool or long cast spool reel will help with casting distance, less memory coils, and a faster retrieve ratio.
... cp
