Love the frabill ones. They are removable, and can slide in and out for when you are transporting your rods. Can also adjust the "spring" for heavier or lighter jigs. Plus they have no memory. The guide at the end is also large enough to prevent freeze up while hole hopping, and allows you to slip a jig through it if you want to put the spring bobber on another rod. Worth it in my opinion.
Also, the search function is in the top left corner now! They are modifying the one that used to be in the center