Hi. Have a BMW 325i E93 convertible BJ2009. Which of the two batteries can you recommend to me? Varta Blue Dynamic 595 402 080 12V 95Ah 800A G3 (lead acid) or Varta Silver Dynamic AGM 595 901 085 12V 95Ah 850A G14 Take lead acid or AGM? Thank you in advance. MfG FireDVB