On the 3 boats that I have owned, I've ran EverStart and Interstate. Both had over 800mca. Never had any issues with none of them. The cranking battery I have now will need to be replaced because it won't hold a charge although I'm not having any other issues as far as starting. To answer your question, you don't need to spend money on a high end battery. The EverStart's are under $100 and Interstate may be just over $100. Whatever your preference is. I fish out of Nobby's rig and his cranking battery holds up really well. For that price I'd definitely check that battery out! Hope more people chime in and that this helps!