x2... I have an older Kistler Magnesium TS Crank, Rattle, and Roll model... Its a 7' MHM. Perfect for Square Bills. Also doubles nicely as a topwater, spinnerbait, heavy jerkbait (pointer 100s and vision 110's). Highly reccomend it. Dont let the Kistler warranty scare you. Great rods for the money.
As far as St. Croix's, I have a 7' MF Avid, which is also a good Square Bill rod. The fast action is great for fishing around cover.
In my opinion, you cant go wrong with either!!!