I went with the shorai 210 CCA 8 cell version and I couldn't be happier. It's a great little battery, provided you charging system is in order. If not, it will ruin that $150 battery in no time. My suggestion would be to use the search function of the forum do some reading, and test your charging system, to make sure that the battery is indeed the real issue. If you put in a nice new battery, especially the sealed lithium types, low voltage from your charging system can ruin your battery, and you will be right back where you started with a bad battery.