I know the old style multi piece rods were no real good. The new ones (if you get a good one) are great. I have a 2 piece GLX spinning rod I carry in my trunk(in a rod tube) for just in case I find a new place day. It is just as much sensitivity as my one piece IMX rod. I love my one piece rods( when I'm in my truck or taking a boat), but 2 piece is great for the car.