I have the Ultima blue top D31M on my boat with a 150 merc and run full suite Lowrance electronics with sonic hub and everything else except trolling motor off of it. These things ain't cheap but they last.
Whatever you get a Perko master power switch is a good idea to isolate the battery completely when not in use.
From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."
Then He made the earth round...and He laughed and laughed and laughed!