I found some flashers online for sale. Both around $300. I don’t know enough to make an educated purchase and am struggling to find the information I need online. My options are, a Vexilar fl-18, used lightly but old with a bad battery. Or a marcum m1, not sure how old it is, battery is fine. Which is better? I’m leaning towards the marcum just for the fact the battery works and the case is convenient. Any insight would be appreciated thank you!