I currently Have a Die hard, and it Died Hard. I have a 600w amp hooked up to it. I have put her away for the winter and have been starting her once a week for the last month, except I missed one week and the batteries dead. It's been awhile since I've gotten a new one. Should I stick with it (dieHard) or should I invest in something else? Or, Do you think that the DieHard is a good set up for the car and amp? The amp is a new installment! Thanks in advance!