I originally had purchased two Optima yellow tops. I bought one at discount auto and I already have it as my starter battery. The other yellow top I purchased through eBay and hasn't gotten here yet. I filed a claim with paypal and it seems like I am going to get my money back since the seller has until the 28th to reply and hasn't replied. So right now I only have one Yellow top. I was just wondering if I get my money back what other battery would you guys recommend me to get instead of the yellow top to use as the battery in the trunk for the system? Should I get another battery besides the yellow top or no? I have a $210 budget.