First of all, I'm strickly a hard water fisherman. When the soft water comes, I'm backpacking the Appalachians in Pennsylvania & West Virginia. I'm rapidly becoming a convert to electronic ice fishing. My first experience with a Vex was last season. I'm giving them a very serious look. I've pondered between the Vex's & Marcum's and have set my sights on Vex. What are the differences between them? WHAT ARE YOUR EXPERIENCES WITH THE FL-8 VS THE HIGHER END MODELS? Is the price differences between the low end model and top end model justification in catches? What do you recommend for this electronically challenged hard water guy?