The Interstate battery I put into my 88 300E in 1996 is still working well and starts the car in at or below 0 weather every morning. This was installed after three AutoZone batteries in one year. I learned my lesson.
AutoZone battery $48 plus being stranded twice and the hassle of replacing it twice $0
Interstate $97 No Hassle still working $Priceless.

After 10 years I expect it to go at any time but it will be replaced by another Interstate.

__________________
Dave
88 300E 250K Sold
2000 C230K Totaled @104K
2003 ML320 156K Sold
2009 E350 4Matic Sport 46K Sold
2011 ML350 60K Sold
2014 GLK350 46k Sold
2012 GL450 67K
2016 E550 Cabriolet 48K