As title , my current battery is coming up on 6 years old and the car does some weird things now and again. So factoring in that Mercedes recommend changing the battery when its 5 years old i figure its time to swap it out before it dies. The question is which battery to go for ? I can get one from euro parts when they are on 50% discount , they stock 4 types. Exide Bosch Lion Duracell They are all AGM type batteries for stop start. The question is which one ??? Thanks guys.