For about the same price what should I get for a replacement battery for my ML320 year 2000.

Sear Diehard Gold (not the AGM, AGM more expensive) or Mercedes Original Battery.

Which is the better batteries.

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Silver Honda Accord, 2006
Silver G500, 2003
Silver SLK-320, 2002
Black ML-320, 2000
Bule Porsche 993 Targa , 1997
Silver Merkur XR4Ti, 1987