texas rigged plastics and spinner baits really need two different flex speeds. I prefer a MH rod with a fast backbone/tip for texas rigs, and a M rod with a meduim-fast backbone for spinnerbaits and crankbaits. However, if you went with a fast action tip for all purposes, it would be hard to mess things up. The fast action rod is kinda the GM or FORD of fishing, regardless of the rod weight you are using for a given task, the "fast" backbone will
generally get it done