Nate, to be St. Croix model specific, here is what I use.
AC70MHF—This rod excells at flipping/pitching. I also use it as a slop rod. It has all the backbone you could want and won’t pull the hooks out. Feel free to string it with a good Flourocarbon or a braid like PowerPor.
AC70MHXF—I use this as a ‘tweener’ rod. It’s tip is a little softer that the AC70MHF, so I tend to throw bigger topwater like spooks with it. The softer tip helps in setting the hook on topwater plugs. For me it’s still too stiff for spinnerbaits and cranks. I will use to to flip/pitch plastics when the need arises.
PGC70MM—This in my mind is the pinnacle of crankbait rods. It has great feel and an action that won’t pull the hooks out when a fish hits your lure. I rarely set the hook with this rod. I allow it to ‘load up’ with the fish’s weight thus securing solid hook placement. It allow handles spinnerbaits very well also. BTW, this is a Premeir Glass Crankbait rod.
PC70MM—One of the best lipless crank rods on the market. Very responsive and like the PGC70MM it’s action won’t pull the hooks out when a fish strikes. I use it solely for this purpose.
I combo all these rods with either a Shimano Curado or an Abu Garcia 1600 Morrum. Set properly they can throw a lure a LONG ways. Just ask some of the guys I’ve fished with.